There is a 9th circuit carve out for certain faculty speech in Demers v. Austin. Doesn't apply here but I think something like this could become a test case if she is fired?
Yes, I do agree if this continues on it could be an interesting court case to watch as it makes it up the courts. Will the 5th circuit agree with Demers? Will we have a circuit split? Who knows.
https://en.wikipedia.org/wiki/Demers_v._Austin