Question on when does a parent seek legal help/intervention?

Me again My daughter currently lives with her father in an environment that I believe to be harmful to her. Does anyone have any experience with taking legal action to protect your adult child when good decisions are not being met?

Quick recap;
- Daughter age 22, lives with DAD. She was recently in hospital for 2 weeks - was involuntarily admitted. I went to her dad's place and found her extremely psychotic, very angry and talking suicide. I called 911 and to this day she is angry with me for doing so.
-She was put on anti-psychotics (preventazine?) and ativan/lorazapem. While in hospital her symptoms improved but I still saw there was some paranoia and anger there.
- She is back at her dad's now - been almost a week and she is struggling. Supposedly, stopping her meds, (the anti psyc only - she likes the ativan she says).
- She is experiencing angry outbursts at people, myself included and there have been some crying spells
- after a angry outburst her dad tries to deal with by taking her shopping and spending $1000 on 'stuff' for her - to make her feel better
- i just learned from her friend that yesterday she was very drunk, stopped her meds and could hardly walk.
- her dad said he 'was glad sheh was smiling and happy' and needs the alcohol right now to help her thru this. He thought it was funny she almost fell into a closet ??!!
- friend was appalled and left and learned after that my daughter actually went outside and was wandering the streets drunk
- (prior to her 2 wk hospitalization her dad thought it was ok she smoked pot because 'she needed it'. He used to let her smoke it in the house.)
- apparently when she got home from hosp, she tried to smoke a bit and got 'really loopy' so hasn't smoked it since which is good
- I am worred for her safety!!

I know she is 22 and should be making her own decisions. However as she is not financially able to support herself, she must live with either her dad or myself She chooses her dad because he enables her with her denial of her problems -- can I do anything to stop this and help her? Forcing her to live with me I think wld be a mistake because she wld be SOOO angry and I would still face struggles of having her take her meds etc... some people have said I shld contact justice of the peace and have her removed from his house --- and get her admitted for longer than 2 weeks...

I don't know what to do! I am trying to get in to see a professional who specializes in BP so get some advice (She has not been diagnosed to my knowledge but I know there is something going on here), In meantime. anyone have any experience with this type of thing?? Shld I contact a JP?

Thanks again for listening

I've had a similar experience. If you can see her in an illegal situation (wandering the streets drunk is usually against the law), report it. I know it sounds harsh, but that might be the only way to get her in a safe situation. And it's likely the only thing in your power to do.
You should definitely consult an attorney who specializes in adult guardianship cases. It's very difficult to get, but you might luck out, and the law defines the requirements different than a family member would. My father-in-law has Alzheimer's and my mother-in-law wants to put him in a home, but she can't because he doesn't fit the description of incapacitated defined by the law.

I know it has to be painful and frustrating and I know you've brought your pain here to try to find some guidance. I wish there were a better solution. But you're still where you were at the start - all you can do is try to reason with her, but you can't save her; she has to save herself. Be strong.

Thanks PT.