Sorry to hear about your problem pet. I have a very much older cat who likes to keep me awake but I put that down to senility! Is your cat insured? I ask this because some policies allow a certain amount for behavioural problems. Also have you had her checked by a vet? Does she eat and drink more and has she lost weight? This could be down to a health problem so it might be fair, before resorting to re-homing her ,to have her checked out properly. Good luck!