I think there may be something wrong with my kitty. All she does is sleep...that's it. She is not even playful. She is just lazy and sleeps all day and all night. When I bring out string or another toy for her to play with, she just sits there...no response...just watches it. Doesn't even try to play with it. Maybe she is not a playful kitten? I think we are going to take her to the vet? Any suggestions or advice?