<human>: I got paired up with this girl randomly in the beginning of the year. We're not close at all, but we're cordial. We do our own thing and don't get into each other's space. 

Onto the point, I see her buying food at like 2 am and then throwing up into a trash bag. It's sort of weird that she does this in our room because I'm right there. She thinks I'm asleep, but I'm usually not. I'll cough and move around to get her to stop, which she will for a few minutes and then continue to throw up. Also, sometimes she doesn't eat for several days or eats once a day and in general, has a bizarre schedule. I didn't notice this before, but I did once i started paying attention. 

The other thing is that she does drugs. I don't know exactly, but I saw a packet of white powder on her desk. I don't know if it drugs or nootropics or some food additive or whatever but it was in a plastic bag with a small spoon inside a second plastic bag. 

I don't know what to do about this because, like I said, we try to mind our own business and we're not close. We rarely talk, and it's somewhat awkward, so I usually stay out of the room. She's not the stereotype to do drugs or be bulimic. She's really introverted and takes school very seriously, so I don't know if it's out of place or inappropriate if I bring it up with her.

Summarize the given text in a few sentences.
<bot>: My room mate is bulimic and does drugs. We're not close at all, so should I bring it up or like tell someone?