Hello Lady,
what you can try with your cat is the following: Sent the cat to the ONLINE CATTERY. You click your cat and choose CATTERY. Once you did that, you get yourself the CATTERY DOCK from the KittyCatS mainstore if you not already have it, rezz it to the ground, click CAT TO SL and get the cat back into SL. Maybe after you done that, it will play with you again.
For the case that sending your cat to the cattery didn't help, please make a ticket at our Support site under
http://www.kittycats.biz/support/ and include the cats ID.
StrayCat Southpaw
-KittyCatS Customer Support-