OK - I had hoped today would be really better for you. Unfortunately it seems we talk about and re-hash the same things. I am not trying to be mean but maybe you enjoy being the victim IDK. The board can't help you move forward if you don't want to move forward yourself.
If your W is a Vulnerable Narcissist then her BF can deal with it. I still don't understand how it is currently your problem or if you respond to her with YES/NO/Thank you or whatever how that impacts you.
If you truly are suffering from Stockholm syndrome then you need help, more help than from random people on the Internet.