Yeah, I'm actually not sure then, I've just relayed what I've learned in my classes and stuff but I could be misrepresenting or just be wrong, I certainly would't discourage you from doing your own research though - which it sounds like you already have.
Heres just an expert from Britannica if it helps explain what it is
"Psychologists who have studied the syndrome believe that the bond is initially created when a captor threatens a captive’s life, deliberates, and then chooses not to kill the captive. The captive’s relief at the removal of the death threat is transposed into feelings of gratitude toward the captor for giving him or her life…it takes only a few days for this bond to cement, proving that, early on, the victim’s desire to survive trumps the urge to hate the person who created the situation. The survival instinct is at the heart of the Stockholm syndrome. Victims live in enforced dependence and interpret rare or small acts of kindness in the midst of horrible conditions as good treatment. They often become hypervigilant to the needs and demands of their captors, making psychological links between the captors’ happiness and their own. Indeed, the syndrome is marked not only by a positive bond between captive and captor but also by a negative attitude on behalf of the captive toward authorities who threaten the captor-captive relationship.
"By the 21st century, psychologists had expanded their understanding of the Stockholm syndrome from hostages to other groups, including victims of domestic violence, cult members, prisoners of war, procured prostitutes, and abused children. The American Psychiatric Association does not include Stockholm syndrome in its Diagnostic and Statistical Manual of Mental Disorders (DSM5).
I think what you might really want to look into is battered woman syndrome which is similar to SS and an off shoot of PSTD. This is what commonly comes from abusive relationships and may be a better term for what you are trying to describe.