Towards the end it looks like there is a word missing.
"I don't know to grade a paper. I don't know how to teach a class."- Looks like the 'how' got left out of the first sentence.
This is just plain awesome. I dearly love Quitis and you've portrayed her as the strong woman she is. This fic is just lovely beyond words, and I'm sorry that I'm not able to give you a more coherent review. Thank you for writing this.