User blog comment:Megadracosaurus/Am I the only one who likes Heather?/@comment-24497928-20140622195348/@comment-24018437-20140623052838

Think about it this way: How would Heather have known there weren't Outcast spies on Berk? And if Alvin disocvered the Riders flying to Outcast Island with Heather, he would have suspected she told them and kill her parents anyway.