The Mageborn, book 1
Dayne Edmondson2018

Emma was a normal teenage girl before her twin nearly burned her to death.

When Emma and her brother discover they have magic, they are visited by an archmage of a school for mages. They embark on a journey, but it becomes fraught with peril as a deranged cult captures them. Using every trick in their book, and with the help of unexpected allies, they struggle to not only survive in the wilderness but foil a dangerous plot involving a world-ending artifact.

Can Emma and her allies overcome overwhelming odds and stop the cult before it's too late?