Thanks, everyone. I forgot to ask what time they do surgeries when I dropped her off - this is the group's vet, not my personal vet, so I'm not as familiar with them.
She was a good girl this morning, going in the car right away and going into the vet's easily (last two times, she balked). She turned into a little porker, up from her first weight check with me at 59lbs and change to 65 lbs and change! I'd say she's pretty darn healthy at this point, huh?