My daughter took a class that the TA did not post a final grade for. What happens now, does that class have to be retaken?
Probably not, but it is better she take this up directly with her advisor rather than on these boards. We can only guess. Her advisor will tell her for certain.
Is there no professor for the course? How long has the TA been on strike? Did they teach the content?
Contact the registrar https://registrar.ucdavis.edu/about/contact