Why in the world would you post her bail. This is her mess - let her deal with it. She didn't think enough of her own kids to get help. I see my ex wife pull this crap all the time, except now our 7 year old knows that it is she who needs to do the right thing. When she doesn't, she has to contend with his disappointment. I just make sure the rest of his life is good. I can't make his mother good.
LH