Be Careful What You Wish for — Kyra M. Richardson

Privileged teenager, Olivia Newton, has a long list of things she wants: for her younger brother to disappear, for her and her crush to have a future together and for her rival to finally gets what's coming to her and each one, she places as a wish in a wishing well. But after a fatal fall, she is transported to a world of dreams come true and dreams gone wrong.