My Quiet BPD ex and I were together for 6 years. Her BPD traits were a non issue until our 6th year when she was involved in some traumatic events in her life. 

Unfortunately Blame-shifting occured and she blamed me/connected me/ felt like I was not loyal to her because of the traumatic events and how I supported her. She expected perfection on my part and anything less showed her that I was not loyal, because as I have shared with my therapist and most of my friends and family, I was supportive and they agree.

Do quiet BPD exes come back if they connect you to trauma and they split you black because they blameshifted the events onto you?

Or just an easier question, do quiet BPD exes come back if they connect you to their own trauma?