Is she short or long-haired?

All I can think of is giving her a small dose of Laxatone or a hairball treatment on her paws every so often.

Or maybe she drinks really quickly, and some 'goes down the wrong way'. You could place a medium size rock (depending on the size of the water bowl) in the middle of the bowl, and that would slow down the drinking.

There'll be other ideas showing up here.