Unelmoija: The Timeshifter by Elle Boca
"Boca continues to mix plausible modern-day characters with a magical world that doesn’t rely on stereotypes, to create urban fantasy that is both fresh and accessible.
This novel is the fourth in the Weeia series. Spoilers ahoy!"
More thoughts: https://davidjhiggins.wordpress.com/2018/06/01/unelmoija-the-timeshifter-by-elle-boca/