one time at her mom's friend's house and the police came over (!!!).
Hopefully it was a one time issue. I would keep dialog open with D5. Keep track of how frequently she visits freinds house and how she feels each time. Address it in the future. Discuss with her therapist.
We had to have a "safe word" with stepdaughter while she was away with bio-dad. If she ever mentioned that "she didn't sleep well" that was code that she didn't feel safe. Thankfully, we never heard these words from her.
"What is best for my kids is best for me" Amor Fati Link to quotes: https://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=2879712