Thanks so much for your very helpful reply.
If the culture came back negative for bacteria she most likely has a condition called interstitial cystitis:
She experiences a burning sensation when she urinates.
The most common cause is a dry food diet. Please read articles written by a feline vet:
If you are concerned about meloxicam (used for pain and inflammation) ask for a different anti-inflammatory like prednisone
You can help by changing her food to canned only (NO DRY at all), upping her fluids and giving 4 drops of cranberry juice every day for ten days by dropper.
Please let me know how she is doing. I hope she feels better very soon.
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