Just to be clear, is this some kind of fad diet or just a euphemism for anorexia malarkey? Because if she's also anorexic, that's probably something that should just get put out there while the rest of this dirty laundry is getting aired, then again, it's plausible that such would get revealed in this brouhaha anyway, but...
SpoilerThat's messy, and I don't think you really want to get involved with a woman who burns bridges to avoid potential awkwardness that would be over in, like, 5 minutes of conversation.
Definitely warning signs, yeah.
SpoilerJust don't rule that option out completely.
Yes, you did about as right a thing as you're able or allowed to do by the situation to my knowledge. My understanding has always been that people do not get better on their own, especially when it comes to addictions.