Keeper of the Winds by Jenna Solitaire & Russell Davis
The cover of my ARC of Keeper of the Winds (2020) shows it co-authored by Jenna Solitaire and Russell Davis. This edition is a reimagining and slight updating of a book originally published in 2006. Its author was Jenna Solitaire. Davis come up with the conceit of an imaginary author, narrating her own adventures as she discovers that she is the Guardian of a strange set of magical spirit boards, at least four of which control the elements.