Hello, Mseltz & it's good to see you back... .I'm so sorry for your daughter's troubles and dysregulations, but happy that she is receiving professional help and that there is a plan for her continued Therapies. Please know that once someone accepts that she has a problem, decides to get help for it, and then gets that help, things can really get a lot better. I truly wish that for your daughter... .
We have a "Child Board" here on Parenting a Child with BPD at the very top of the threads page (and here:
Archive: Hospitalization, RTCs, and IOPs), and you will find lots of information in the threads there from parents who have been in your shoes. I do really recommend it so you can see if it answers your questions about RTCs.
Also, there are lots of current members who have dealt with the same problems that you are going through right now--including the beginning process you are going through with the RTC decisions--and I'm sure they will be on board to give you the benefit of their experiences. You are in the right place, Mseltz, and we are here for you