Seeking expert testimony is a sign of strength. A personal relationship with a caring professional is proven clinically effective.
I believe that I can help.
You have been pushed away by a poor suffering woman and her protective mom, who is guarding her daughter who is emotionally fragile.
I have suffered a similar fate some time in the past with a woman, also severely abused by one man, and diagnosed with PTSD. She also had elements of Borderline Personality Disorder, as your friend seems to - fear of abandonment, reckless behavior, volatile temper when afraid of abandonment.
People who have been traumatized develop PTSD or BPD and sometimes Dissociation including memory lapses or multiple personalities.
She may always have the abandonment issues and relationships with these people are characterized as "walking on eggshells".
You did push her abandonment button several times, and sometimes abandonment is imagined or exaggerated.
These people can be sad and lost and people such as you (and I as a therapist) want to help them. You must be 100% with people who feel abandoned, and perhaps you could have helped, but by now she may have emotionally moved on.
She has a lot of pain and needs a lot support. If you ever get back with her you will have to give 100% - all the time and may still have a rocky road.
I would like you to read this book to get more knowledge (= power)..
She has lived this scenario before, I believe, and she will move on.
Never say never, but this may be too difficult to solve, even if you get your foot in the door.
I shall keep you and her in my prayers and will be happy to continue working with you on this question. Please get back to me as needed.
Elliott, MAE, LPCC, NCC, CCMHC