Hi, guys! Thanks for the concern. We went to the vet Wednesday morning because she still wasn't better. Got some non-steroidal anti-inflammatories to give her. She is better but not well. She'll still cramp up if she gets up after being inactive for a while (like after overnight, or if we leave her alone to go to work). We're supposed to be keeping her moving, but that's difficult when you're not there for a couple of hours at a time.
She seems fine when we go on short, quiet walks, though she slightly favors the leg. And every once in a while she'll just start shaking all over. I think she's so tense that all her muscles get sore after a while. It's sad, but kind of sweet, when this happens, she looks around for me and then crawls in my lap with a "make it better, mom" look on her face. If I massage her a bit, the shaking stops.
She's going back to the vet on Monday after she finishes her pills, so I hope she's better by then.