When I came back from spring break I brought a lot of snacks back with me (like multiple boxes of granola and energy bars) and put them in a plastic box in my closet. I recently noticed that there are only two granola bars left in the box when I have only eaten a few things. Several of the types of foods I haven’t even eaten any out of the box yet and they’re all gone. I noticed wrappers of food I had had in the box in my closet in her trash so that pretty much confirms to me that she has been stealing from me. BUT I also had some cash in my wallet that was stored in my closet as well and I noticed today that it was missing and I haven’t spent any of the cash that was in there. We don’t share a closet and I have made it very clear over the semester that I do not like to share my personal things. ESPECIALLY if they are in my closet, which she obviously has been rummaging through and violating my privacy. How can I confront her about this? Shes not a very approachable person and is hardly ever awake when I’m in the room.
If she actually stole money out of your wallet that is a legitimate crime. Dump a bucket of water on her when she’s sleeping or something.
I think that you need to talk to a responsible adult in your dorm or campus housing office, and get a different roommate ASAP.
If she stole money from you then this is a crime, but dumping water on her is a bad idea because it is likely to rapidly escalate to a very nasty and dangerous situation.
You need to get out of her room or get her out of your room, and only a responsible adult associated with your university and its housing can make this happen quickly.
I didn’t confront my roommate when she took my food and water – just taped up the box and angrily wrote FOR BODANGLES ONLY on it – but that was just food and water, and I had about three remaining days to live with her when I found out. Money I’d definitely confront. I might not dump a bucket of water 
but I would consider waking her up if it’s a reasonable time for her to be up and about. Or just stay in the room a while longer than you normally do – this is important.
Get a foot locker that you can put snacks, cash and all personal items in. Then get a heavy duty lock for it.
Tell your RA. It’s their job to help you figure out a response.
Definitely talk to your RA about how to handle this…
As someone who’s been in a similar situation, definitely talk to an RA or RD. I haven’t had anything major stolen from me, but the little things add up. These situations are stressful and you want to stop things before they escalate further.
Tell your RA and get a different roommate ASAP. You should not have to lock up all your stuff or feel unsafe in your own room.