Y'know what, Epi? Because you didn't outright tell this chick to back the fuck off initially, she probably doesn't know that you are not down with her attentions. Some people, particularly INTENSE people like this gal, do NOT pick up on the subtle social cues of "Dear cod, BACK THE FUCK UP!" They think you just "fell out of touch", not that iy was a decision on your part to nip the bud.
She's gonna be drama no matter what. Either bite the bullet or resign yourself to having to fuck with this bitch until she gets tired of you. Sometimes you just gotta woman it up & cut a gal loose. I think it'll be good for ya.