If her tummy seems bloated, one thing you could do is give her some infant simethicone. This is a do-no-harm medicine that breaks up gas bubbles in the stomach. Good for humans and works well for chinnies, too. You can find it in any grocery/drug store ; the dosage would be like .1 cc. You don't say if her chow mix has changed - if so, that could cause stomach discomfort. Or the stress of moving a couple of times...Make sure she is pooping.
I've had chins get spooked for a few days when all I did was change them into a better cage! So, give them time to adjust, and they'll act more normally. Keep a close eye on them(like you're doing) in case there is something medical going on. This is the hard part with chins - sometimes it seems like you have to be psychic to discern a health problem with them. Consult with a vet if something doesn't seem right to you. In general, if a chin is eating and drinking and pooping well, things are ok.
PS FYI If you give the simethicone, it works very quickly, like within minutes.
All the best, Lori