It sounds like she is very nauseated and the feeling is upsetting her.
Forget about mirtzapine, it is making her worse.
Instead get a few jars of chicken or turkey baby food with no onion powder.
First Give her one quarter of a ten mg pepcid a/c (famotidine). I usually add it to a tablespoon of baby food chicken with no onion or garlic.
Most cats will eat baby food and it is very mind for the GI tract.
Elevate her dishes:
She can have 2 drops of simethicone (gasX ) every 6 hours.
Remove all dry food and any wet with chunks, pieces or shreds.
Feed only smooth pate canned food or baby food.
If she gets dehydrated give her tuna water drained from the can.
Please let me know how she is doing .
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