"There were women present (in the room)...instigating the men to be more brutal with her," Maliwal told CNN, recounting what the victim had told her.

"When I saw that video and I saw these women attacking this girl...it just makes you feel so angry and sad that you have such women who can do something like that."

It is unclear if any of the people captured on video in the crowd are involved in the alleged assault or have been booked by police.

The victim's sister watched part of the attack unfold but was powerless to stop it.

"I was thinking of shouting, of telling someone, but the (accused) women grabbed me, saying they would beat me up," said the 18-year-old, who CNN is calling Aarti to protect her sister's identity as Indian law prohibits revealing the identity of rape victims.

Aarti told CNN her sister -- who is married -- was attacked by the relatives of a teenage boy, who they say killed himself after her sister spurned his advances. CNN has attempted to contact representatives for the alleged offenders though it is not clear if they have lawyers.

"They (alleged perpetrators) blamed her, but she didn't do anything," Aarti said. "I never thought they would go this far."

The attack

On the morning of January 26, Aarti told CNN she delivered a bag of wheat to her sister's house in eastern Delhi's Shahdara district.

But when her sister came downstairs to collect it, an angry mob rushed in.

"They started hitting and beating my sister. This was happening in front of me, but I just stood there, I didn't know what to do...I was frozen with fear," Aarti said.

The teenager does not remember how many people there were, only that there were "a lot of them" and they included men and women from another local family.

Aarti said the group tried to snatch her sister's two-and-a-half-year-old son, but Aarti "somehow fought them off" and held onto him as the group bundled her sister in an autorickshaw.

Clutching her nephew, she followed them in another rickshaw, accompanied by two of the alleged perpetrators to the residential Kasturba Nagar area of Delhi less than two miles away -- where the alleged perpetrators live near the house Aarti shares with her father.

Kasturba Nagar is a low to middle-income neighborhood in Delhi where women sit and chat outside brightly painted homes and men cluster around local tea shops. On the day of the attack people were off work to mark Republic Day, the anniversary of the day India's constitution was adopted -- but the day has taken on new significance for Aarti and her family.

The rickshaw stopped at the alleged perpetrators' house, but as Aarti couldn't see her sister, she went inside her own home and latched the door.

Soon after, she heard a commotion outside and from behind a wall watched her sister being led through the street as women hit her with rods.

Her hair had been cut off, her face blackened, and she had a garland of slippers around her neck -- all actions meant to mark her as perhaps deserving of public shame.

Aarti said the women took her sister around the neighborhood, shoving, slapping and beating her sister for at least half an hour.

"I couldn't believe no one in the neighborhood spoke up or tried to help, they only cheered," said Aarti.

Aarti said she called police on a borrowed cellphone and they arrived 15 minutes later.

At the police station, Aarti's sister told her she had been locked in a room where a "wrong was done to her" -- a colloquial phrase in India referring to sexual assault -- before being paraded in the street.

R Sathiyasundaram, the deputy police commissioner of Shahdara district, said the investigation is still underway and would not say which laws the alleged perpetrators had been arrested under.

He declined to confirm the nature of the sexual assault or details of the incident.

"We cannot reveal all that, it's a matter of investigation," he said.

Internalized misogyny

Though many Indians were shocked that women would allegedly incite rape, others say it's not surprising in a country with strong patriarchal values.

Kushwaha says the problem persists because of societal issues -- and those are harder to change.

She says in patriarchal societies women are taught that they're ultimately to blame for any wrongdoing -- and last month, those deep beliefs played out on the streets of Delhi, when women allegedly ganged up on one of their own.

"If fighting crimes against women is a fight of the female gender, women should have supported the girl...but they did not do that. They instead beat her up because it has been ingrained in them that whatever men do, it is women who are responsible," she said.

In families, mothers-in-law often curtail the freedoms of a new bride. In public, it is often women who police other women's actions or way of dressing.

The attack in Shahdara is an extreme iteration of that, Kushwaha said, where women allegedly resorted to cruelty against another woman to avenge the alleged suicide of a teenage boy.

According to data from India's National Crime Records Bureau, crimes against women were 20% higher in 2020 compared to 2013 -- the last year before the ruling Bhartiya Janta Party (BJP) came to power. However, those statistics likely don't capture the whole picture -- as in other countries, rape is often underreported, and an increase in reported rapes could reflect a growing awareness about reporting sexual violence.

Kushwaha -- who has recently been appointed the spokesperson of Bahujan Samaj Party (BSP) which was formed to represent caste minorities -- says that while no government can be singularly blamed for the violence against women in India, the rise of right-wing ideologies in the country threatens women's safety and security.

CNN has reached out to the Indian government's Ministry of Women and Child Development for comment about the rising number of attacks on women but has not received a response.

In a statement to the upper house of parliament last February, the Ministry of Women and Child development said a number of initiatives had been taken by the central government to address women's safety, such as strengthening legislation. But it added that state governments are responsible for law and order and safety of citizens. However, police in the national capital territory of Delhi report to the central government.

Aarti said this was not the first time the alleged perpetrators had targeted her sister. They had been harassing them for weeks, showing up to their homes and hurling abuse off and on since the boy's suicide in November, she said.

A week before the attack Aarti said she filed a police complaint against the alleged perpetrators after they allegedly set fire to her father's autorickshaw, which he rented out for income because he is paralyzed.

When asked to comment on the complaint, deputy police commissioner Sathiyasundaram did not respond.

Sathiyasundaram also declined to share any information on the alleged perpetrators' motive for committing the crime, saying that it was "under investigation."

Pragya Lodha, a clinical psychologist with MINDS Foundation, a mental health non-profit, said if it was true that the woman was attacked because of the teenage boy's suicide, it reflects the lack of awareness about mental health.

"There is no direct cause and effect when it comes to suicide...it is rare that mere rejection has led to suicide," she said.

Lodha said even in major cities like Delhi access to mental health services can seem unaffordable, and a stigma remains around mental health issues.

The way forward

Delhi authorities have indicated they want the case resolved quickly.

Delhi police have set up a 10-member special investigative team and Delhi's chief minister Arvind Kejriwal said the government will hire the victim a "good lawyer" and fast-track the case.

"That's a start but a lot more needs to be done...I'm going to be keeping a tab on this case because I want the investigation to be completed in a very short span of time," Delhi Commission of Women's Maliwal said. She said a prompt investigation would spare the victim more pain.

A fast resolution would be in stark contrast to the majority of rape case in India. According to Kushwaha, the lawyer, it often takes a year or more for rape complaints to be registered and investigated, despite Indian law requiring rape case investigations to be completed within two months.

Cases can take years to go through court, and many alleged perpetrators are out on bail while they wait for the result -- sending the message that the law can't do anything to stop them, according to Kushwaha.

And even after all that, fewer than half of rape complaints that make it to trial lead to a conviction. For example, in 2020 only four in 10 cases ended in a guilty verdict, according to the latest statistics from the National Crime Records Bureau.

"Even when convictions happen, they happen in 10 to 15 years," said Kushwaha, the lawyer.

Maliwal, from the Delhi Commission of Women, says part of the problem is the lack of fast-track courts to deal with rape cases.

In 2019, the central government approved a plan to open 1,023 fast-track courts across India to help clear a backlog of rape cases and sexual offenses against minors.

However, according to data submitted by the minister of Law and Justice in the upper house of parliament in December 2021, only 681 such courts had been established.

Apart from law, there also needs to be a focus on education, with children in all schools having access to sex education and gender studies, said Kushwaha. Violence against women will only abate if India's patriarchal culture changes to create a more equal society, she added.

For more than a week, police have been guarding both ends of the street where the attack took place. People slow down as they pass and attempt to peer in.

Aarti is still living at her family home, yards from the house where her sister was attacked, on the same street where she was paraded and mocked.

"I'm not going anywhere; I can't afford to," said Aarti.

"I'm 18, I don't have a job, and I need to take care of my father," she said. "I'm glad my sister is home...I gave her son back; he was happy to see her."