WHAT NEXT?
Just as her daughter's rape shone a light on women's place in Indian society, the current case has provoked outrage on social media with #HangRapists trending on Twitter in India.
But Singh said that was not enough.
She urged India to fix its notoriously slow and creaking criminal justice system, noting her daughter's attackers were still alive despite being sentenced to death.
Cases take at least six years on average to final ruling, according to governance tracking group Daksh.
As in the 2012 gang rape, a special fast-track court will hold the trial for the latest case.
"I have been fighting for my daughter's justice for seven years now, but I hope this family does not have to wait as long," she said.
"Our law and order - from the police to the courts - have to function effectively, transparently and quickly. Only then can we hope for any change. Otherwise, everything just remains on paper."
India's National Commission for Women has condemned the attack and vowed it "won't leave any stone unturned till these perpetrators get the punishment they deserve".
The commission advises government but has no powers.
On Monday, India's defence minister condemned the attack and told parliament the government was "open to every suggestion to curb such heinous crimes".
