354 D 506 false case. need help

I met that girl in Mba first year we had great talks meet n did study together.. Then we fall in love with each other.. Then I come to know she cheating with me had bf from 2yr.. We had small argument.. She was lied alot .. Then she saying she loved me n all.. All.. Last month we were gud suddenly I come to know that girl still talking with that guy..so I decided to talk with her dad...she lied gave me mental harassment she played with my feeling.. I forgive her but suddenly her brother saw chat n scold her then she went offline for week... After one week I got call that FIR filled against me sec 354 D n 506 by that girl.. She writen following statement to police I am stalking saying threats to damali n all. I am using her Facebook id. I was forced to say her love me n love u.. What to do? My friends are with Me. They knowz Police not hearing anything... I am low caste NT c she is obc... I have evidence that she said on whatsapp that I wanna marry u.. Love u n all.. Pics Can I file FIR to her? When? Is that benefit? Can she withdrawn FIR? Or If I fill FIR against her..after that is any way that shr can she file another case FIR like s*xual harassment n all..that make me trouble? my family.. I am very tens..