Sounds as though she may just have to stay caught up or ahead, then, if the temporary zeroes aren't something it's clear the teacher would be reprimanded for and if they're a problem for her. What's being done here doesn't sound unreasonable, honestly, though I can see it might not fit with her preferred style.
I think it may be a mistake to ask how you can buffer it for her. She's very close to being a fully independent college student; she needs to do it herself. And, concretely, there will be times in college when there are deadlines other than at semester end, and maybe more deadlines than she likes, won't there? If that stresses her out, time for her to learn some coping strategies, while she doesn't have the rest of the college experience stressing her out too.
