Queen of the Stars by Catherine Banks

Elara can pull the stars from the sky…literally.
Afraid of what the Warlords of Minloa might do to her, she hides her powers.
Until she can’t anymore.
Discovering her past and the bloodlines she possesses, changes everything. She’s much more important to the Seelie fae than she ever dreamed possible.
But her carelessness with the stars brings invaders from another universe — invaders with technology far surpassing the Seelie’s, demanding Elara return their star.
She must protect her world, her warlords, and the universe from these humans, or die trying.