Hi Mary,
Hope you are doing absolutely fine and you Tenten may one of the reasons for that.
Well I think you are concerned about struvite stones of you cat. Let me tell you something
You can help your cat's condition by feeding her a diet specially developed for cats who suffer from the formation of struvite stones. If your cat is prone to developing struvite stones, she may need to be fed a special diet permanently. This special diet should also provide urinary pH control to keep her urine continuously acidic, and a reduced but adequate level of magnesium. Make sure your cat has access to clean, fresh water at all times. Consult your vet to determine an adequate diet.
There are several measures you can take to ensure the best possible health for your cat during her recovery period and after:
If she has been prescribed drugs, make sure you administer them exactly as prescribed.
If she has been prescribed a pH control diet, serve it exactly as prescribed to maintain her normal body weight. Don't give your cat snacks.
Allow her access to fresh water, and change the water daily.
If she requires surgery to re-establish the free passage of urine, follow your veterinarian's advice on care of the surgical wound. Your cat may need to return to the veterinarian for re-check visits.
Allow her access to a clean litter box or to an outside toilet area. Clean the litter box daily.
Encourage her to exercise - play games with cat toys or let her go outside several times a day.