Hi there, this is my first post on this message board.
My D19 was diagnosed with BP traits about 4 years ago after she went through anorexia and then pretty severe behavioral disorder, she ran away from home, dropped out of school, endangered herself by connecting with wrong type of friends and experiencing all sorts of stuff.
After my then-wife couldn't handle her rages and lost control over herself, and that was the straw that broke the camel's back for me and I left her and moved out and started on the divorce process. Two years ago my stbxw passed away after losing the battle to cancer.
Unrelatedly, during this time, I had a long emotional affair with a upwBPD that turned into a very loving and close friendship but eventually did not materialize into a romantic r/s. That devastated eventually after she broke up from her bf, got triggered, moved to a different town, and painted me black. This brought me to this wonderful site that helped me get over the rejection, depression, and anxiety I experienced and move on.
When my exw was diagnosed with cancer I was there to take care of her and the family for the whole time and I moved back home after she died.  :)uring that time, my D returned back home, and got regulated. She showed significant progress and recently she applied for college and got back to school.
A little over a month ago she came to me and asked for my help regarding getting therapy. I was really glad as all these years she refused T and that was a big issues that flared up rages until I accepted that she'll get T when she feels ready to and it might take her many years to get there. Well, it took less, and she asked my help both to find a T for her and to help her with the high costs. I found a T that is experienced with BPD and came recommended by a friend I trust (who's a T herself and knows him as a colleague) and she started seeing him beginning of March. I have no direct contact with the T, although he should know about the references he got.
Last couple weeks I feel like there is a relapse in her condition. She's been negative to my current gf and to me, she is unfriendly with me and shuts herself down and does not respond many times, while being controlling in the house, and when she does respond it's usually raging about my behavior.
First, I wanted to ask if this is typical to the beginning of T?
Second, I'd appreciate your advice about how to deal with her behavior. I try to stay calm, validate her feelings, yet put them in a healthy perspective, and keep my boundaries regarding her behavior at home and particularly towards me and her siblings.
Is it a good idea to call her out on her projection onto me and having a double standard?
For example, she raged at me yesterday after I unclogged her shower on her request and since she did not show any reaction and didn't say even a faint "thank you" I told her how unpleasant it is for me and that I expect some recognition and don't like to be taken for granted. Her response was rage about how impossible I am to live with and that I am criticizing and emotional and expect her for a response on the spot while she had a rough day and how could I not seen that and and let her just be alone with herself until later when she regains her energy. My response that I don't read minds and it would be much better if she'd communicate to me that she is in a bad mood, and that even a very modest "thank you" would be appropriate and appreciated

but I can accept that she's in a such a bad mood that even saying thanks is beyond her right now, as long as she communicates it better.
And as for projection by accusing me of being emotional, I reflected to her that she demands from me to detect her emotional state and be considerate about her emotions while she completely devalues my emotions and my need for consideration. This wasn't throwing it back at her and telling her that my emotions are more important than her's but rather saying that we both have feelings that need to be considered, let's be open about them and communicate them, and be fair and reciprocating with each other.
TIL