Thanks guys. It never occured to me that it might not need to be heated! Will tell DH to put the kettle on to boil and at the same time try giving it to her at room temp. That way if she won't take it, the hot water will be ready to start heating.

Jennifer, thanks for thinking of me! 'Middle of the night' is usually not till about 4 or so, so I'm hoping I will be able to hold out for a few extra hours!