I do get paid hourly. I'm going to talk to her again today about it.
I'm not that angry about the money. I want to be paid what I am entitled, of course, but what really bothers me about this is that nothing was said before hand. The week I worked 48 hours was also the first week of school, and was very exhausting. If I had known I wasn't going to be paid overtime, I probably wouldn't have taken the extra hours. I'm also one the senior employees (and the hardest working one) so this is very insulting. It basically tells me that even though I am very hardworking, and I go out of my way to do extra work that is not required of me, I'm not worth paying that little bit more. I'm very tempted to give my two weeks notice.
Thanks for the advice.