Awkward Conversations

I have a classmate who has asked me to met with her tomorrow morning to help her with an assignment. Currently she has a pharmacy degree but wants become a doctor. She has a couple classes she needs to pick up before she can apply for med school. She needs a physics class but didn't want to take one with a lab. The only such class being offered this semester has 3 Calculus classes and 1 Physics class as prerequisites -- she only has one of the Calculus classes and none of the others. She convinced the professor to let her into the class. Do you see the problem here?
I do not have the time to teach her everything she needs for this class -- I barely have enough time to finish my own assignments. Is it for me to say that maybe she shouldn't be in this class? Do I let her figure that out for herself? I definitely have to tell her that I only have a limited amount of time to help and if she needs more to get a tutor. This class is hard for those of us that have all the required classes.

Gross.