I have an sd who is a complete nightmare to deal with. At first, I felt sorry for her because her mom used some pretty heavy parental alienation on her and her sister which ended up with us winning majority custody, but she still continues. My sd who is 17 is a completely hateful, negative, mini version of her mom now. My dh has done everything he can think of to try to combat this bad path that she is on but each year it just gets worse.  Her negative attenion seeking behavior continues to escalate. It started off with some pretty basic lying then she moved to claiming to have anorexia(lasted 2 months), then had sex with a 17 year old at her moms house at the age of 14, (her mom let him spend the night) , then it came out that she had sex with like 5 other people also at that time, then she started having "anxiety" attacks at school and saying she hates all people . After that she claimed to have been raped at school during a homecoming game at which point video feeds were pulled up by police and it ended with her admitting it had never happened. After that she twisted her ankle and wore an ankle brace for 4 months(it was supposed to be worn for 1 week) and got a lot of attention for her "limping" . she ran when she thought people weren't watching.  Then 3 months ago she went to the school counselor saying she felt suicidal. My dh went and picked her up took her to the hospital and she was admitted for 7 days for evaluation, then went through 6 weeks of intensive outpatient therapy. no changes have taken place. (she has actually been in counselling and seeing a psychiatrist, placed on meds, throughout this entire ordeal.) She continues to be hateful and negative to other people. they have never officially diagnosed her with anything. she only has 1 friend at school because for years and years her mom told her she could come live with her if she acted like she hated her school. bm and sd reverse roles, sd has to take care of bm when she is there on her weekends. sd now relies on her younger sister(my  sd16) for emotional support. she stated to the counselor that she leans on her 100 percent of the time. (just like bm uses sd for emotional support). This kid is completely screwed up and next year she will be taking one class at high school and then going to the college to take classes. She is the most immature 17 year old i have ever seen and I question wether she is even remotely ready for this. Over the summer, my dh is sending her to his sisters house in Florida as a last ditch effort to get her back in line. His sister has already lined up volunteer and job opportunities for her. (sd claims she will never work a job where she has to interact with other people). she's never worked a job. my SIL is a very positive person and a great influence on her. I am losing hope each year that this girl will turn around and change her path. I think bm really really destroyed this kid. my other sd is a great person and has flat out said she has no desire to be like her mom or sister. she was ignored by bm when she was young. My sd is outwardly hostile towards me and my kids. my dh is great about calling her out on her behavior(we have been married for 6 years now) . I just don't even know how to handle it though. It's easy for people to say "just ignore it" but a lot harder to do when it's happening in your house.