So I reset my game to factory settings and it worked, so I closed the game, moved all my saved sims into the game restarted and it did it again! (sim was off-screen). I tried clicking "drop out of university" and then for some reason instead of dropping out she appeared at the dorm. So I continued playing but after a while I realized I couldn't click on any links (like the scrapbook, class schedule, party invites etc.)so I saved, went back to the main menu and then went back in and it once again made the bar where my sim and her stats should be disappear, so it was just a blank screen of the campus and I couldn't do anything. Very frustrating!