Welcome to Yorkie Talk. Sorry Gracie is having trouble. Any changes in her diet recently?
What is her primary diet -- kibble or something else? I would eliminate all treats and supplement foods until you can see the vet.
One possibility is acid reflux. There seems to be a growing number of pups with that, and nighttime is often when it is worse. If it were my pup, I would want to rule out pancreatitis or digestive issues from diet too.
What kind of lunch meat do you feed her? I would be very careful with that because most processed meats are loaded with sodium (salt). This can aggravate acid reflux.
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