Social worker malpractice?

I don't exactly know how to put this, so I'll start at the beginning.

Back in '06 I was depressed and was burning myself on the oven rack. My school noticed and they set me up with a therapist. I saw her a few times both at school and at home. I've always been kind of a loner, didn't really have much friends, possibly due the fact I have hearing issues and am legally blind. That summer, I worked at a camp and she visited me when I wasn't working and went out to sightsee. We shared a bed in a hotel. There was only one bed and I was tired. Anyways, a relationship developed. We started doing things together, like hiking or horseback riding. She brought me to her house a few times. Then one night she kissed me. I was uncomfortable and wanted to go home, so she drove me back. Since then we had sex, first with clothes on, and eventually they came off. before I graduated in '07, I moved into an apartment for the summer because things were bad at home with my foster mother and her boyfriend. (I moved out because the boyfriend tried to choke me) She took me on a trip to Costa Rica, then to a few other countries over the years. I moved in with her after the summer and we lived together sharing a bed and I'd work for her in her garden or doing stuff. I lived there until June 2012. During that time she was manipulative. I couldn't have any friends over. In Feb 2012 I broke my leg hiking with another woman. Over time that woman and I became close, and we had an affair in April. Then the woman I living with, my ex therapist broke up with me in June. I told her about the affair I had and she lost it. While I was out, she changed the locks on the doors, and wouldn't let me get my stuff, threatening to put it outside. After she removed my name from her bank account she wouldn't let me back to the house to get the things. Remember, I'm legally blind, and can't drive so she was my only way to get around. I could barely walk. My leg was nearly healed. I stayed at my grandfather's house for 2 weeks before I could get an apartment for myself. After I got the apartment, she let me back into her house to get my things. While I did love her before all that happened, that end was messy. She emailed me to ask if she could forge my signature for her home insurance to get some back back by saying she 'paid' someone to help her (me) remove tornado damage. I was living with her at that time, and did help, but didn't ask for money or anything.

So basically I became romantically involved my therapist. I know she did bill my insurance a few times, and I have proof that she was my therapist, and that I lived with her. It's been almost 2 years since I moved out, and I have recently recovered from all that trauma. What should I do? She shouldn't have crossed boundaries with me in the first place. I don't know if that's my fault because I was a loner. Help please?

Oh, and she was 20 years older then me.