She started meowing at the water ball before drinking the water.
I'm guessing that this is a typo and you meant water bowl - if not, I'm confused.
But if this were my cat and it started meowing at the water bowl I might try to change that water bowl for one made out of another material. (Ceramic and glass is best - avoid plastic) - Sometimes cats meow at the strangest things.
That's all I got on this one - anyone else?