I'm sorry that you are going through such a difficult time in your relationship.
Many of her behaviors are quite concerning. Do you feel like the T is helping you?
Did you ask for the RO to be removed?
It sounds like
Boundaries are going to be especially important as your pwBPD sounds like someone who likes to push people past their limits.
What are some of your values that you are unwilling to compromise for her?
What will you do if she tries to violate those values?