my 6 year old female cat is getting spayed tomorrow. She's an indoor cat because she refuses to go out. shes gentle and timid and absolutly HATES most strangers. She's not vicious. she just hisses at people then runs away 
I've had cats all my life and never been worried about the vets. but I couldn't sleep last night worrying!!
Any tips to help keep her calm? I've left the carrier out so she can inspect it and put her fav blanket in it.