Hello and thanks for requesting me :)
Has she had any health issues in the past?
Is she spayred?
How much and how often are you feeding her?
What do you feed her?
Any changes in her daily life?
Any food in the vomit ever?
Normal urinary and bowel movements?
OK...there are a couple of things that come to mind here, and again, I am not a vet just going on what I've seen. First, try splitting up her meals into 2 meals. You can also give her 2 pepcid per day (given her size) to help in case its an acid reflux issue. This may take a few days to notice any change. If that doesn't help, my concern is a liver issue. The only way to know for sure if it is, would be bloodwork from the vet. I know cost is an issue...trust me, I know. See if you qualify for a no interest veterinary loan from:
If she is getting into the cat food, that COULD cause tummy trouble like pancreatitis so do try to keep it away from her. :)
Let me know how you make out with splitting up the meals and with the pepcid in a couple days.
You can always log into justanswer and go to "MY QUESTIONS" and come back even after you accept and the question closes. :)