given OP's history, I'm going to wait for the rest of the story to come out

As of now the story is:

deadline to drop passes
gf gets sick with "some stomach thing" and can't leave the house for 3 weeks. Was this not important enough in your life to remember what happened to her within the last few weeks?
gf files form to be dropped and accepted
teacher fails her (is it even possible to fail someone not on your roster any more?)
dropped for fall

additional information: teacher is a total bitch who is senile and should not be teaching

op should clarify some points of his story because more comes out with every post