"Atypical Anorexia" isn't antiquated at all; it's a subtype of OSFED (the updated term for EDNOS). But Atypical Anorexia is effectively anorexia except they started at a very high weight, so they're still not underweight, thus weight restoration isn't part of a treatment plan. And by all accounts, that's not what she's got going on, since she'd have lost significant weight by now