How to get a cat to drink after an operation?

My 8mth old female cat had an operation today to remove her baby fang teeth which hadn't fell out naturally. I think she had her operation late in the afternoon as when we picked her up at 6pm she was still very very drunk from the anesthetic. She couldn't walk without falling over and just wanted to sleep. She is a little better now, her coordination has came back but she is still very very groggy on it, I suppose that's to be expected. My concern is the anesthetic has made her be sick 5 times since we got her home and she will not even look at water never mind drink it. She had to fast from 6pm yesterday evening in preparation for this so its now at least 30 hrs since she has had fluids. Any help on how to get water into her without distressing her would be very helpfull. Many thanks in advance.