[Diplomacy! Throughout her time here, Elsa perhaps hasn't made herself known as the greatest advocate for the diplomatic route. She's never one to raid the other side, but those who find themselves straying over to the Dragons of Earth side do, more often than not, find an unwelcome greeting from Elsa, whether in words or a blast of ice.
She does stare at the weirdo walking into her territory. Disapprovingly, apprehensively... but not getting into a fighting stance. It's just that she remembers Korra from before, maybe?]