Star in the Storm (Aladdin Historical Fiction) Reprint edition

A RISKY SECRET
All non-sheepherding dogs have been outlawed from the rocky coastal village where Maggie lives. Unwilling to give up her beloved Newfoundland, Sirius, Maggie defies the law and hides Sirius away.
But when a steamer crashes into the rocks during a violent storm and starts to sink with a hundred passengers on board, Maggie faces a difficult choice. She knows Sirius can help rescue the people trapped on the ship, but bringing him out of hiding would put his own life in jeopardy. Is Maggie's brave dog a big enough hero to save the desperate passengers -- and himself?