I have an orange, spayed, 1.5 year old female cat (our only one). She is quiet and friendly during the day and she plays actively inside and outside. The problem starts when we go to bed. After a few hours of our being asleep, the noise starts. She makes strange purring and meowing noises for hours. I tried feeding, playing, petting, punishing, and locking her up. Nothing works. She wont shut up, and i cant sleep. I dont know what to do with her. Is she lonely??? Help me please...