I need help getting my ex back

she moved to the area I live in because she ran away from her dad who physically abused her, she needed someone to make her happy and I needed someone to love and we found each other, we fell in love and everything was great, but she wanted facial piercings and tattoos, I said to her I don't like them and I don't want you having them, this was my opinion but she took in as me controlling her I think because with everything to do with her dad, anyway she said that this was how her dad started out, also something was upsetting her and I kept asking her to tell me because I wanted to help and she said I wanted to know everything that goes on in her life of every second and every day which I didn't it was only that one thing. so ye, she left me because of it and she became hostile to me, so I gave her time and sent her a letter saying I'm sorry and explained everything but she sent me a letter basically saying the same thing she keeps saying to me, its like everything I say to her she just ignores it and uses the same excuse, I've told her I'm going to leave her alone now but its hard, I just whish I could get her to talk to me its killing me, she says that se doesn't want me anymore and that when she left me she felt free, but I never controlled her and when I asked her before hand what I'm doing wrong she just said that I'm doing nothing wrong, she says it over and over and although she gets flashbacks of things but she doesn't want that, but she did I don't know why she doesn't anymore, I feel as if she has changed, she used to be so sweet and know she's acting like a ***** which I know a shouldn't be saying about her but that's what's she's doing but she never used to be like this. the worst thing now is I've been told that now she fells "free" she's going around kissing girls and boys for no reason. she may of broken my heart but ill do anything to get her back and I can deal with the pricings and tattoos. please help me,

If she just left home from her parents care and now on her own, she has found a new born freedom. Time is the hardest thing to do but that might be all you can do right now. Sorry. I know your heart is heavy and emotions running away. Hang in there. It definitely will be ok.