Thanks for sharing this. Honestly I don't know anything about this type of situation. But I noticed no one had replied to your post. So I thought I would. The thing that occurred to me as I read your post is the concept of the trauma bond. Perhaps you're familiar with it? I don't know if it would apply to your situation or not. There are no doubt other members, here on PC, who would be better able to address what you're experiencing than I am. Hopefully some of them may yet reply as well. In the meantime though here are links to 3 articles, from Psych Central's archives, on the subject of trauma bonds:

What is Trauma Bonding?

Healing from a Trauma Bond

Traumatic Bonding: 9 Signs You Are Bonded To The Abuser | Caregivers, Family & Friends

My best wishes to you...