ION, it's official. My Math and Democracy professor cannot find the 6 assignments I put in her box last Thursday. She's "afraid" she set the envelope down somewhere, and they are lost for good.
Tuesday we make a plan on how to deal with the situation. Since it was about 20 hours-worth of catch-up work, I'm hoping that the solution is not to re-do all of it.
vw, Does she believe that you turned them in (i.e., does she remember getting the envelope from you)? If she does, I can't imagine she would make you re-do the whole thing. If I ever "knew" I lost one of my students assignments, I would feel extremely guilty about it, as I should (of course, I'm paranoid about that so I make sure it doesn't happen). However, she now doesn't have a way to judge the quality of the work or grade it, so she's in a bind.
Things to think about for your meeting: I'm assuming you don't have copies, but is there some way you could talk about the assignments in a way that would show you did them thoroughly? Is there a compromise grade that you would be happy with?
I don't regularly read this thread, so I don't know the circumstances behind the make-up work, but, if your prof let you do make-up work as a favor, I would start by thanking her for the opportunity to make up the assignments, assure her you really worked hard on them (and provide as many examples/anecdotes as possible to show this), and propose a compromise that you feel would be reasonable. Honestly, I would be so thrilled if a student came to me without accusations, but instead actively proposing a reasonable solution to a problem such as yours, that I would probably agree to any reasonable grade/credit compromise (lower grade, not getting a grade but not factoring that assignment into your overall average, etc.).
I know that it sucks, and it is her fault, but you don't have any way to prove that, and, especially with make up work, the assumption (of any higher ups) will be that you did not complete the work. Believe me. Right now you want to focus on not having to redo all that work, and getting credit for what you did. And maintaining a good enough relationship with the prof to get through the semester.