Vet said that this isn't uncommon. She said if her temp was normal she could have some more bute today and some tomorrow if she needed it. Her temperature today was 99.6*, so we gave her a little bute.
She was acting more like herself today. Still not back to normal completely, but I did see her galloping around in the fields and her ears were moving around again. Hopefully she'll be completely fine tomorrow. Next time, we are going to break up the flu and the rhino- the vet seems to think that was the problem.