Thanks guys!
Tinker's tumtum is settling down, I think...

We did find some (dried) kitty puke this afternoon but because it was in a 'hidden spot' (behind the computer desk), we're not sure if it was recent or if it was even her. (the last time I caught her "in the act" was 11/30 -- almost 6 days ago)

She's still keeping her weight, playing, and sleeping normal!

Don't know what had her belly so uppieset.