Join Date: Jul 2010
Location: Cobourg, Ontario, Canada
When you went away for the weekend, did you have a sitter come in to feed them or were they left on their own with food? If you had a sitter, I would check with the person to see if s/he observed the type of behavior you came back to. It does sound like there was some incident that happened that especially frightened your girl.....it could have been seeing a stray cat outside to upset her, or event the scent of one. Our houses/apts. are not airtight and cats can smell other cats inside and out. Often all it takes is one incident to ruin a relationship, even tho they are siblings and grew up together, this is not that uncommon. I agree with the suggestions you have already received. I think at this stage I would start with some medication from you vet to get your girl calmed down for a while and then very gradually wean her off it and see if that fixes it. Good luck and hope your kitties can get their friendship restored.
"There are no ordinary cats.";"Time spent with a cat is never wasted."~ Colette
"A loving cat can mend a wounded heart." ~ Unknown Author
Alkitotle aka "Alkee", "Lambie" (July 2/04 - Oct. 2/15) -- white Devon Rex
in avatar. "Always in my heart."