bien,
I'm sorry if my previous post seemed harsh. I'm sure you're trying to do everything you can for your daughter. I just can't imagine my own children in that situation without me going ballistic.
I'm also a step mom. My step son is 22 and I've been "step mom" since he was 6. There was some early tension between myself and ex, but mostly because she was NOT being Mom. I'm not a hitter, so discipline was never an issue. She couldn't get upset over timeout, or removing a privilege when she knew she was leaving him with me for her own convenience.
Anyways, how long is your daughter supposed to be there? How much longer do the two of you need to endure this?
When she gets home, have her write down what happened. At 9, if she is mature enough to impress a judge that she is telling the truth and has not been coached by you, she can tell her own story and ask not to be sent back. If she wants a relationship with her dad, she can ask that it take place for shorter periods of time on her own turf. He can fly to her several weekends a year and it wouldn't cost anymore than having her for the summer and paying her airfare, outings, food, etc.
And, though I'm not an attorney, I'd suggest quietly recording all of the incidents that happen in a journal. DO NOT continue to call police, welfare, etc. At this point you know they aren't going to do anything, so further calls would appear to be harrassment. Judges see this kinda stuff from people all day long, year after year. If you appear to be part of the problem (harrassing your ex and the new wife while your daughter is visiting) the judge will not be sympathetic. He/She will see it as a bunch of immature, hateful adults. That is a low tolerence area for judges.
The court is only interested in the welfare of your daughter, not what your ex has said to you or what SM has done to you UNLESS it effects your daughter.
Document
Document
Document
Then, talk to your daughter about her visit when she gets home. Ask if she wants to go back. If she says yes, your interpretation that it's only for the outings may need to be adjusted. If she says no, prepare to have visitation changed so that he visits her.
Check with the court or a womens shelter about finding a court advocate for your daughter. If she has someone outside of the situation that can speak for her and advocate for her in court, the judge will be more likely to go with what the advocate has to say as an independent / welfare of the child spokesperson. NOT a guardian, cause you don't want to give up any rights to your daughter, but ask for an advocate or explain what you need and they will tell you what that person goes by in your court system.
This is a great forum, with lots of people that care about others. Don't feel like you're harping or going on and on. Listening is what we do best in these situations... Well, next to long rambling posts of advice.
Hang in there.