Girl filed case against me

I met a girl at my workplace, she used to tell me her sad past and cried, I helped her financially and emotionally, one day she called me saying that she was pushed out from her home by her parents she doesn't has place to live, so I called her to my home and gave her temporary accommodation and I was happy to help her, she never left my home after that and stayed 5months, when I ask her to leave she will shout and cry to create neighbors attention, she wanted to marry me and she used to blackmail me, so for temporary relief I told her "OK I will talk to my parents and decide now let's vacate this house" and vacated the house, after that I came to know that she's a drunken girl who have sex with boys for her pleasure and now she wanted to settle in her life, now she filed a complaint against me that 'I cheated her in the name of marriage, and she lived with me for six months and had sex', I never had sex with her, I didn't complaint any blackmail complaints against her fearing of problems and I thought she will leave, she has photos of me and she together in that house and voice record that I asked time to decide regarding her marriage proposal, what should I do now please help me