Thanks to you all for commenting. Boots the beast is now yapping at me because he doesn't like what he got for supper. I'm ignoring him - for now. Trouble is, he knows if he just keeps on wining, I'll give in. This is a cat who thinks that he should have fresh cold water every time he wants a drink - even if I replenished his bowl half-an-hour ago.
Have you tried a fountain? My cats love it and most drink more. Cats consider standing water (in a bowl) to be stale water but moving water is considered fresh water. If she likes cooler water drop in an ice cube or two.