My Name is Rio

Rio is trying to get along in the world. But it's hard with amnesia. She can't remember anything. Not even who she is, only waking up in a desert. The only clue she has about herself is a bracelet with a single charm on it. Reading her name, and on the back, the phrase: "Choose the sands or the water". However, no one has seen rivers or springs close to her town in years. Water has to be imported. And by driving, you can get to see a body of water in 48 hours time. But since waking up in the desert, Rio has been working at an inn, where she also lives. And the phrase on her bracelet is not just a phrase, it's a prophecy.