Since she DID keep food down and used
the box 1) at the shelter for one month
and 2) at the vets for 3 days, I believe it is
not medical.

Don't assume that there is no medical issue based on the above. A UTI
can crop up in a day, not to mention the fact that at the vets she was
confined to a very small area and peeing in the litterbox was probably
her only choice. Please get her urine checked to rule out a medical
cause. That is the *only* way to be sure. Assuming it's behavioral, when
indeed it might be medical and causing her pain and discomfort, would
not be right.

Megan



"The only thing necessary for the triumph of evil is for good men to do
nothing."

-Edmund Burke

Learn The TRUTH About Declawing
http://www.stopdeclaw.com

Zuzu's Cats Photo Album:
http://www.PictureTrail.com/zuzu22

"Concerning all acts of initiative (and creation), there is one
elementary truth the ignorance of which kills countless ideas and
splendid plans: that the moment one definitely commits oneself, then
providence moves too. A whole stream of events issues from the decision,
raising in one's favor all manner of unforeseen incidents, meetings and
material assistance, which no man could have dreamt would have come his
way."

- W.H. Murray