If you really believe that D14 is suffering emotionally and mentally living with her new age spiritual crack pot mother and loser sex partner, then you need to decide whether it is better that D14 lives full time in a more stable environment with you.
I think that she hates living there only when OM is around, or when, as D14 puts it, STBX is whiny.
Lately she has been spending more time here with me, but sleeps at the condo at her mothers request. She had also told me that OM is around a lot less when she is there because STBX knows that D14 doesn't like him.
Something is changing with STBX. In August she was 'happy' with OM, went to visit her mom with OM and told her how happy she was not to be with me.
Yesterday she tells me she misses our dog because she is lonely when she is at the condo alone. That's surprising because she was 'happy' and I would think she would have OM over so she wouldn't feel so lonely. D14 tells me that STBX has been telling her the same thing. And that she's been depressed.
Well, letting go isn't easy. When I saw how sad she was yesterday I wanted to tell her to come home. But we don't get to do that. We get to be divorced.
Today I am feeling better. I realize when I see her down I get angry that our life has gone down this path. But I also realize that it has to go this way.