I`ve had Phoebe for about 2 years. My husband and I adopted her from the local shelter as a kitten. She is normally the sweetest, most affectionate cat. Call her name and she comes immediately. She is an indoor cat who gets out occasionally (kids!). She got out one night and was gone at least 36 hours. She is not the same. She hides, is jumpy, and fearful of even inanimate objects. She doesn`t come when you call her anymore and isn`t as affectionate, yet she`s not in the least aggressive. Totally a different cat. Any ideas?