Water Water Everywhere

Mia gets a food and water bowl in the kitchen like most dogs, but for some reason she doesn't drink from that water bowl.  We've tried.  At one point it was her only water source and she ignored it.  We did end up giving her a tiny bowl that attaches to her crate for when we used to crate her during the day if we went out for errands or whatever, and she will drink from that, but she's still looking and seeming very dehydrated.  Last night Abe decided to try giving her water in the family room, another key hangout.  She drank the entire thing, I've never seen her drink so much water at once before.  The bowl is just an extra huge coffee cup that I generally use as a cereal bowl.

Why does she hate her real water bowl so much?  I would think that a dog would know that they need to drink water, and they would just do it.  She apparently doesn't seem to know...