How can I get my daughter back?

My daughter is know 14 almost 15. I had her since she was born and then for 8 more years. My husband, her father, cheated on me since she was born and I kicked him out in 2000. I have had to work always fulltime to support my kids, I had a son too, now 28. My ex lived with his girlfriend and then the divorce was final in 2002. 2 days after the divorce was finaliced, they got married and actually took my daughter to the wedding without me knowing, out of state. It was her weekend with him. Since I was then single, I had to continue working fulltime. She was in private school previous to the divorce but he did not want to pay for it anymore, so I had to get her into public school. IAfter school she had to stay in a program as so many other children did and I picked her up after I left work. Her father sometimes even did pick her up for the assigned weekends. But as soon as he was re-married, he picked her up from school one day in a week and then every other weekend. And that was ok because it wa court order. But as soon as I started dating again, he started compalins...that I don't treat my daughter right...that I am unfit...and so on. He once filed a restraining order so I could not get my daughter back from the visit with her father. It was overturned by the court because he lied. However, he had more money and a big house and his wife did not have to work and they influenced my daughter to live with them because she would get everything she wants. I tried to fight it but I did not have the money for a good attorney. My daughter wanted to live with them and there was nothing I could do about it. If I would have fought it with attorneys, she would have resented me for life. So I sacrifieced and accepted. That was 6 years ago. Since then they always tried to sabotage the weekends that are supposed to be with me. They say that I have to accept that my daughter wants to be with her firends or playing soccer or going to this event or that event. This is going on and on and on. The time I have a chance to spend with my daughter is only half a day, one night and half the other day. She is now 14 going on 15 and has her weekends planned with her friends. To some point I let her cancel my weekends because I don't want her to resent me. But lately she always had something else. 7 weeks ago I asked her, on my weekend with her, if she goes with me to a party of my son's friends. It was a graduation party of his girlfriend. First she said yes and then she said she has something to do with her friends for school on that Saturday. I asked her if she can compromise and I pick her up at 2:00 pm instead of 10:00am. she said yes. The next day shortly before I wanted to pick her up, her stepmpther called me and said that my daughter has psychologiacal problems because of me and I should not force her to be with me if she has planned something with her friends. I sid that I am her mother and I have the right to be with my daughter. She said that "No, I am her mother and you are only her birthmother". Leave her qalone. I called my ex and he blew into the same horn. That night I received a message from my daughter that she only wants to see me sometimes. And since I haven't heard from her agin. She does not answer my tests, noe my calls, her father doesn't answer the phone, her Stepmopther either. I went to their house, (2 hours away), and no one opens the doors. I contacted my ex-inlawas, they don't answer either. The phones are working, they just ignore me. If I involve court or a lawyer, I can't afford, she may resent me more. But I have still no idea why my own dayghter won't respond and call or at least text me or conatct me. It is seven (7) weeks now and no word. Anyone now what I should do. I do not have any money for lawyers.