The last fallen moon

"For Riley Oh, life as the Godrealm's last fallen star is not all it's cracked up to be. Her new divine heritage doesn't even come with cool magical powers; half of her friends and family (including her parents) can't remember her; and to top it all off, the entire Gom clan is mad at her for killing the Cave Bear Goddess and stripping away their healing abilities. But when their anger boils over and a group of witches curse Riley's home, she knows it's up to her to restore magic to her clan--even if it means sneaking into the Spriritrealm. Luckily, Riley has some backup. Along with her sister, Hattie, Riley meets Dahl, a heaven-born boy with shockingly white hair--together they'll fight vicious monsters, discover dark underwater worlds, and race to save the land of the dead from a fate that no one could have forseen."--Adapted from jacket.
Riley Oh ventures into the Spiritrealm, where she hopes to convince Saint Heo Jun to become the new patron god of the Gom clan and restore their healing powers.