Could something have scared her? Feel all over her body for any pain response. Look in her mouth for a stuck item.
Check roof and under tongue.
Its possible she has a fever. Normal for a cat is 100 - 102.5
If so, apply a cold compress to her tummy and pads.
Sneezing indicates an upper respiratory infection.
This is analogous to our common cold.
Drain the water from the can of tuna into a bowl. See if she will lap it up. If she does, offer the tuna.
Add a tablespoon of warm water to a jar of baby food to dilute it and warm it to bring out he aroma.
If she will not eat syringe (slowly) about a tablespoon an hour for four hours.
Put the syringe in the side of her mouth of her mouth where there is a space between her teeth. Keep her on her tummy in a nursing position. Do not hold her up like a human baby.
You can make a steam room by running a hot shower in your bathroom. Then take her in for ten minute intervals.
Please let me know if she eats and how she is doing.
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