Since the food's coming up immediately, that's most likely a regurgitation, which (after a conversation with the vet) I tend to think of as a mechanical thing. She doesn't consider it a vomit. Try raising the food bowl, try feeding smaller portions, try spreading the food out on a plate (rather than mounding the food) so she has to eat slower. Edwina has always had a tendency to regurgitate and those measures -- as well as not feeding her when she's worked up (for whatever reason) or has just played -- also help a lot. She needs to eat as slowly and calmly as possible. (Not always an easy thing to achieve with a cat!)Actually we haven't ruled out food allergies. Which is why she is being feed only rabbit. Today marks the 2nd week she has been on rabbit. Too soon to tell if she is allergic to a different protein (poultry, pork, beef).
Good idea about raising her food bowl. I may try that.
Thanks.