Old flame is back, some problems with her

long and short of it: i'm m22, she's late-20sf. I honestly can't remember how much older than me she is. This is as of now; when we were dating it was something like 18-24?25? something like that.

She was my first real relationship. Fell out of my life, turns out she tried to off herself/got committed to a hospital for a while because she was on suicide watch. I couldn't get in contact with her. She contacted me about four months after it happened, told me where she had been, then fell out of my life again, which is cool and all.

Now she's back, we are not together, and she's..kinda changed completely. or I've changed. I'm not really as naive as I used to be, and I'm a constantly churning pit of god-knows-what because of some cards life has dealt me. I'm dealing with it accordingly, however when I talk with her she likes to paint me as an antagonist. The best part- the first conversation we had in over 2~ ish years was her crying about her fuckbuddy was getting weirdly attached to her and wanted a relationship.

I've tried to be friendly, but she ignores me consistently, then gets mad at me when I don't talk to her. I text her, don't get answers, then I stop texting her because I don't want to pester her. She won't text back unless I initiate. We talked a few days ago and she mentioned how she 'used to be my girlfriend', as if she was using it for leverage. I laughed at the concept, because 'used tos' don't really work for me- she knows this, and has known it.

My problem here: She's accused me of looking at her as if she's nothing but walking t'n'a, and treating her as such. I've been nothing but nice to her since we started 'talking' again, if you can call it that. I don't call her the pet names I used to call her, i'm rather polite, and I'll leave her alone when she does things because she has no obligation to me. However, she's also treating me as if i'm a jangled-up puppy. She openly flirts with me, teases me, etc. etc., then goes on to mention how she could 'be out at the bar working on getting laid' instead of talking to me, as if she's doing me a favor. When i protest either of these(mentioned how I enjoy her personality because she's one of the few people I know who stands up to me, etc., pointed out she doesn't need to stay at home to talk to me/does not have to go out of her way to spend time with me if she'd rather 'go out and get laid') she explodes and start insisting that she's been treating me like i'm made of gold and everything she's done is friendly while i'm just a huge douche.

I'm pretty sure she's just playing the victim, so I'm trying to decide if I should ditch the bitch or give it time to get used to how she functions now. Gut feeling says ditch the bitch, because I'm honestly getting nothing out of her short of headaches and annoyance. I'm also pretty sure she's completely out of hand at this point, because as far as I can tell you don't start bitching to someone about your fuckbuddy after you haven't talked to/seen them in like 2 years. She also keeps referring to me as 'retarded' in that way people seem to do. You know, the 'ha ha, you're way out of hand, you're so retarded!' way. I don't think she gets that it annoys me, partly because I used to be way too dour and serious when I was with her and I've lightened up considerably.

so what would you dudes do?