@Teelaish
Well, they could still cause the trees and their roots to overgrow immensely, thus rapturing the earth and the houses and everything, even if their powers do not apply to earth, only plant life. Would be similar to an Earthquake, too.
(Wasn't their an anime film about that? Right, "Origin"!)
Oh, and if they govern plant life - starving to death due to lost harvests seems like not such a small problem, either...
Point is, one should not fuck with fairies. See the cat sleeping on the dragon's lap, do not fuck with fairies of any element.
So you mean that the forest fairies are more likely to just steal their favored humans away, right? I can totally agree on that point, even if I'm sure there'll be left some chaos behind, either before or after her kidnapping.
But I see, the humans could totally underestimate their possible ire, too, because obviously, water fairies ire is more remembered than that of their forest friends simply because there was more of it on the water fairies side (due to more human interaction) than on the forest fairies side.
I still think Prince is stupid for not clearing distressing stuff up for his fiancee, who can probably wreck havoc just as effectively, if not more, than dear Aishira. Probably more, what with the fairy king thingie...
(Please wreck havoc please wreck havoc, that would be so fun...)