Is Aadhaar card enough for marriage registration?

Hello Sir, I want to ask that; if a 18 year old girl wants to do love marriage and she told about it to his parent but in response her parents had destroyed all her documents which can prove her legal age for marriage. Now is it possible that his boyfriend (21+) takes her to the police station with an advocate and tell them that we both want to marry with each other but she have only aadhar card. Therefore we need some time and legal protection so that we can arrange new age proof for marriage. And no legal action can take place against them. Points to be noted: 1. She had studied only upto 4th class and all related documents are destroyed by her parents; 2. She had no birth certificate as she was born in her home.