I did some research via Google. It appears that some people do refer to “bloat” in dogs as “flipping” the stomach.
Here’s an article about bloat in puppies.
https://www.thesprucepets.com/bloated-puppy-2804919
Interestingly, bloat in puppies usually occurs in: (1) large and giant breed pups, (2) pups that are anxious, irritable, and/or nervous , and (3) pups that are poorly socialized and/or aggressive.
Obviously, the little girl in this case is not a large or giant breed so, if bloat is the problem, that’s another red flag against the breeder.