<human>: Can you condense the text into a few key points?

So I've been living with my current housemates for around 6 months, we're all postgrads in the UK, there's 4 of us total, we're all 23-29. we've pretty much only known each other for this time.

One of my housemates, Annie went through a period of essentially anorexia (although she's never used the term) she's a healthy weight now but definitely has issues around food. She's only told me about this to my knowledge.

A few weeks ago Annie was confronted with her weight at the doctors. She hasn't said anything but it was obviously higher than she expected and I think she'd just been avoiding the numbers anyway.

Since then my other housemates have picked up on her eating issues. Annie is turning down opportunities to eat together, is eating very little (most things on her fridge shelf just sit there until they rot). Now we're organising a house christmas meal and she's already sowing the seeds of not eating much (says she doesn't feel like drinking, is purposefully encouraging us to make sides she can't eat as she's vegan (bacon sprouts, using butter for the potatoes etc), but then is also saying she'll only eat sides rather than make a veggie main).

I know she has eating issues and the other housemates have cottoned on. But none of us know what to do, we know whenever she talks about the massive lunch she had so she shouldn't eat much for dinner is a lie. We're literally watching her make excuses to starve herself. it's almost annoying because we don't know if we should be calling her out, if we should just be going along with her charade, how much we should push or whatever.

Any advice?
<bot>: housemate i've only known for a few months seems to be falling back into anorexic behaviour. we've all noticed. what do we do?