I have a student that recieved an assignment. She has a review draft that is not done yet and I cannot get in contact with her. I have sent her repeated messages to get in contact with me and I sent her a message saying that if she didn't contact me that I would have to drop her as there are other people that are looking for mentors. I am guessing that since there is a review in draft is the reason I don't have an option to drop her as a student. How do I do this?