"Holding hands" by Valerie Everett is licensed under CC BY-SA 2.0
Text from the back cover:
Alexis has always been able to rely on two things: her best friends, and the magic powers they all share. Their secret is what brought them together, and their love for each other is unshakeable -- even when that love is complicated. That unshakeable, complicated love is one of the only things that doesn't change on prom night. When accidental magic goes sideways and a boy winds up dead, Alexis and her friends come together to try to right a terrible wrong. Their first attempt fails -- and their second attempt fails even harder. Left with the remains of their failed spells and more consequences than anyone could have predicted, each of them must find a way to live with their part of the story.