Pup seems mostly fine this morning. Got up to check her a few times during the night. She's dry, drinking water, a little lazy, but still got excited when I got the leash. Number two looked normal.
I called the vet while walking her, and out of an abundance of caution, I'm taking her in at 10:30 just to be safe. We have "free" visits included in a monthly fee, and I have to pick up her flea meds, anyway.
I'm guessing they're going to say, "Wait and see," and "X-rays will cost a lot and might not show anything" etc. like when her paw is acting up.