we had our 6 month old pup spayed on tuesday, they kept her in overnight as she didnt come around from the op as well as they would have liked.we picked her up yesterday afternoon and she was initially pleased to see us but, since we got her home she has been hiding under the couch and will only come out to eat drink and toilet.i realise its been an ordeal for her but didnt expect her to be as bad as this.is there is anything i can do to comfort her ? or should i take her back to the vet?