The Odin Inheritance by Victoria L. Scott
Ariana Trevelyan, a mathematics student and deft mechanical tinkerer, thinks keeping her parents in the dark about being a navigator on an airship is the wisest course of action. She can’t admit to them she throws darts in pubs to raise money! When a nasty German fellow tries to abduct her from a Cambridge library and her delightfully cryptic Great Aunt Miranda discovers her airship secret. As she finds herself on the run from mechanically Enhanced ruffians & surrounded by people with magical powers, she discovers that there’s far more to her dead-eye aim than she initially thought.