She wants you to be emotionally available for her, but not to be emotionally available for you. Avoid these people, men or women, for anything you're not absolutely forced to.

I think she's talking about people who need to be constantly emotionally validated, which can absolutely be emotionally draining, especially if you're working through shit yourself.

Like, if your partner has BDD and you have to have a ~~conversation~~ argument with them multiple times a day defending them from their own self loathing, that's exhausting after a few years.

I read this to refer to the way overly emotional guys that cannot handle failure or rejection.