I know back in my dorm days, all I had was a really crappy microwave shared between myself and about 30 other guys, and we always got pissy if it was used for too long. Off the top of my head, I can remember stocking my mini-fridge & freezer with the following
Personal pizza's (The crappy 1$ brand ones. Cheap, quick, and effing delicious)
Bagels & cream cheese
Pasta Salads (The boxed kind)
Yogurt (Usually the Trix stuff with some raspberries thrown in, cause I'm a big kid like that)
For the dry stuff that wasn't stuffed into the fridge, I found the little rice makers to be a godsend along with some minute rice. Pretty much anything canned, vegetable and soup-wise can be tossed into some gladware containers and popped into the microwave as well.
Umm.. what else. I was totally known for doing the old clothes iron grilled cheese sandwiches as well, as they didn't allow us the nicety of a stove to cook the things on.
Slow cookers are a beast as well. A nice fat roast, with carrots, an onion, and some potato's like Oniya mentioned last for DAYS when paired with some white rice, and it's ridiculously filling. Whatever you dont eat, cut up and toss into those handy-dandy gladware containers to heat up later.
If her college allows it, a little George Foreman grill is TOTAL godmode. You can cook just about anything on there, even though it may skirt around the time constraints she seems to be under. Possibly something to be used as a dinner-cooking type thing?
Someone mentioned not keeping milk, and I think that's generally a good idea. However, some places sell the individual cartons still, like you would get in gradeschool, and those were always killer to snag on the way out to class. You'd imagine the envious stares from the females as you drink a thingy of dark chocolate milk on the shuttle over to campus.
*EDIT* Sweet holy monkey crap do not EVER toss cauliflower into a slow cooker to try and steam it. It absolutely REEKS, and the smell lingers for at LEAST a month. It might be delicious, but you may as well set off a stinkbomb on her floor.