Aw come on, how tough can it be?

[to prove her point she scoops up Chumon and holds him by his tail as he swings his tiny fists uselessly trying to hit her]

Heck yours are barely as big as a dragons head.

[Chumon decides to make the point for Hiccup and produces a block of cheese from some unseen pocket. When he throws it at her face it explodes with enough force to knock her over, singe her and send chunks of cheese everywhere]