Thanks in advance to anyone who reads this and has any ideas...it is lengthy and strange. My son is 15 years old. He met a "girlfriend" 6 months ago. This girl is 17 and a high school drop out. She doesn't work or go to school. She has a history of known mental problems, and as far as I can tell, spends her time manipulating people to get what she wants. Thanks to raging hormones, my son is "madly in love with her." Initially, I tried to support the relationship but that only lasted a few months because my son began skipping school, sneaking out of the house, and stealing- basically ignoring any boundary rule I set. One night, he left the house without my permission and my mother, from whom I am estranged (you will see why shortly), picked him up to spend the night at the girlfriend's house. At this point, I started counselling with my son both at school & with our family MD. Unfortunately, he became even more disrespectful and disobiedent. Then, he ran away to my mother's house, and she refused to return him to me. I had to contact the police. When our family physician recommended boot camp or military school as an option, my mother sued me for custody of my son, requesting by child support and declaring me "unfit." I am a medical professional- I work full time and support 3 children. I have never been involved in any problems with the legal or family law system. In my mother's suit, I was prohibited from getting my son any professional counselling or placing him in any type of "alternative school setting." During this entire time, my son's father, who has joint custody w/me, was contacted multiple times by my mother's attorney to "join her in her suit." Additionally, my son ran away from home again during this time and was missing for 6 weeks. When I contacted the police again, my mother lied to them w/regards to knowing my son's whereabouts- despite the fact that he was in possession of a cell phone she gave him and was withdrawing money from a checking account she opened for him, all without direct parental consent. On the date that my mother and I were scheduled to go to court, she "mysteriously" produced my son for the hearing, even though she had claimed not know his whereabouts/how to contact him. On that day, her attorney dropped her lawsuit suing me (is there even a legal basis for this in Texas), and instead she paid her attorney to represent my ex-husband to sue me as "sole managing conservator with exclusive right to determine the child's residence." The attorney even gave my ex cash to participate in this. This is the same ex who is approximately $10,000 behind in child support.
So, now I am looking for anyone with advice about this siutation and where I shoud proceed from this point. My position is that this kid is totally out of control and needs both professional help and placement in an environment where he required to have respect for himself and others. Of course you love your kid, but I am thinking at this point that there is nothing left to do. I am also feeling very victimized by the legal system at this point because my mother has broken multiple state law felonies (harboring a runaway, enticing a child, lying to the police) and no one will do anything about it. During the time that my son was a runaway, someone (I'm sure it was my kid) opened up a line of credit in my name- $20,000- and ran up $18,000 before I was made aware of the situation. This does not even include fees for my attorney- who did nothing I asked for & my time away from my job. Because my ex does not have a stable living situation or a car, I know my son will be right back at my mother's house to live. There will be no supervision or boundaries- which means unlimited access to the girlfriend, no attendance at school, and probably continued criminal activity.
At this point, my feeling is that I need to voluntarily relinquish my parental rights to this kid. I cannot be held responsible for his continued poor choices and behavior when I have 2 other adults working against me who either don't or won't see that this kid is at crisis point. Before this period, I purposely severed all ties with my mother because of similiar activities- when my ex and I split- she paid all of his attorney's fees and allowed him and his pregnant girlfriend (yes, she became pregnant while we were still legally married and living together) to live with him.
Any ideas/thoughts? I appreciate any help at this point...

