did they give he any pain meds at her last visit or any metclapromide?
have u tried feeding her any apple twigs, mine love them.
my vet will put rabbits down if they grow spurs on their back teeth as unless their diet has had no hay, its unlikely to fix by itself. Is your vet very experienced with rabbits? it may be that her mouth is feeling uncomfortable now if they spurs grew very slowly and she was used to them. did they check her teeth again on Monday?

If she is jumping around ok, then I wouldnt be too worried, but teeth grinding and sitting in the corner looking fluffed up is a sign that your bunny needs to go straight to the vet.