Any update? Was the vet able to fit her in?
Like others have said she may be in pain, or it could be her Thyroid out of whack, you might have your vet check it.
I'm so sorry to see this about Banks, how is she today?
Oh Christine, I'm sorry to hear this about Banks. Have you noticed other clues that she may be in some discomfort/pain? like is she sleeping through the night or any changes in sleeping habits, how about eating her food? does she seem more withdrawn? Let us know how tomorrow's vet appt. goes. I am thinking of Banks and you.
Whew!!!! hopefully it's nothing more and her test results come back great. Sending lots of love to you and banks. Man, that kinda scares me though as Ruthie is not the friendliest either...LOL. I love Banks!