Like the Nirbhaya case of 2012, the Hathras gang rape and murder of a young Dalit girl has shattered the conscience of the nation yet again. Nirbhaya's mother Asha Devi says nothing has changed in our country when it comes to women's security and she is shocked that we have not learned any lessons from her daughter's horrific ordeal. Excerpts from an exclusive conversation with Outlook's Rajat Mishra.