Just had a flashback

2016, an ex girlfriend I hadn't seen in years shows up at my door in tears. She asks if we can talk, but there's no way I'm letting this woman in my home. So I ask if she can drive me someplace. As she's driving she's telling me her sob story about how her life went to shit after leaving me, yada yada yada. Cut to parked next to a cornfield in the middle of nowhere, she reached over into the glove compartment and pulls out a ziplock bag filled with 15 or so smaller baggies filled with "baking supplies"... Without hesitation she crushed some on a cd case, all while in tears mind you, and takes a bump, she goes back for a second and gets back up and says, without any irony whatsoever, "I'm a good person y'know".
Just to name a few of the things that she's done since leaving me
She accused me of being abusive just so people wouldn't question her dumping me
She set her car on fire and blamed a drug dealer to get out of her debt to him
Beat up and robbed her roommate because she was broke and couldn't make rent
Beat up a pregnant woman for giving her "attitude" at a BBQ
Wrecked a car, and abandoned it to get out of drunk driving charges
And that's just shit I knew about, lord knows what else she'd been up to in the 3 years I last saw her.
I finally ask why she came to me and she said that I'd always been good to her and that leaving me was a regret she never got over.
In my head I'm trying to find a way to get back to civilization so I can get away from her. I tell her I'm hungry and to drop me off, which she does.
As soon as I'm home I immediately call her best friend from when we were together to tell her about her mental state, their friendship ended around the same time as our breakup. I say I'm sorry, and that was the end of that. I heard she got evicted about a week after that incident and I haven't seen or heard from her since