Heather says that when she found windshear , she'd been hurt in a fight with a typhoomerang but in snotlout's angels she tells atali that she found windshear when she was a hatchling and that they bonded right away and had been together ever since .
Heather breaks the keys off in the locks of two of the dragon cages , if she wanted to keep the gang from following her , why not do it on all of them .
Hiccup is still watching heather and johann through his spyglass when heather takes off on windshear , how does she not see him and toothless when they duck behind the rock just as she flies past them .
How does heather not see hiccup and toothless hanging upside down near the door of the stables after she locks the dragons in their cages .