My 12 year old daughter began taking this drug a month ago and I ...

My 12 year old daughter began taking this drug a month ago and I noticed she does alot of twiching while falling asleep.One night I even heard her have a bout with sleep apnea. This scared the heck out of me. This med seems to do nothing for her defiant disorder so why should I keep her on it? After hearing the syptoms of discontinuing this drug I am a bit worried about getting her off of this. She also takes remeron for depression. Can someone give me some good advice on how to confront this drug pushing psyciatrist that put her on this nasty med?