Anyhow, Skinny, if having to name or diagnose what she is helps you move on then so be it. It likely won't get you any closure, however, as the more you focus on her, what she's doing, characterizing her - ANYTHING focused on her, the slower your progress will become.

You're deep in a rumination cycle and that's most often a catalyst to depression, if you're not already in one. The more you allow this to consume you, the more you'll find yourself isolated as friends, and others will begin to pull away out of frustration from hearing your war story everytime they speak with you. Beyond that you can't expect to have an audience here for very long with people who have little to no investment in you to sit and read you drone on and on and on about her, and what you're doing to demonstrate you're moving on (which looks like window dressing and validation-seeking behavior to be honest).

Have a few people close to you you can confide in, journal as well as another member suggested, and stick with YOUR experience meaning your feelings, what's going on in you and keep her out of the conversation. That's my best advice I can give you as to where you're at and moving forward right now.

Co dependents and narcissists make strange (but common) bed mates. Narcissist wants to be idolized, co dependent wants to be accepted so does whatever it takes to cater to narcissists' drives.