Wielder's Prize (Wielder's Prize #1) by Elle Cardy

SPFBO6

Snatched from the only home she’s ever known aboard the Wielder’s Prize, Jasmine is forced to work as a crew member of a different ship. To survive, Jasmine must dodge her captor who has a personal vendetta against her, outsmart a fearsome magic wielder who has taken a dangerous interest in her, and get back to her ship. Somehow. Just when she thinks things couldn’t get worse, she learns she too is a wielder—an untrained wielder who is a threat to everyone on board if she can’t control her magic. And she’s not the only out-of-control wielder on the high seas. The secret of that wielder could shatter everything Jasmine thought she knew. Time and hope is running out. At any cost, she must get back to her ship and discover the truth behind all the secrets before everything is lost.