It's hard to have a conversation with a tree. I've tried. I've been like, "Hey Oak, who do you think the bad guy is this season on 'Only Murders in the Building?'" and the Oak is all like, "Whatever". Not so with this Plague Nymph! Nature spirit! Forest fairy! They have opinions about the breeze and the bees and the trees! They're totally wrong about that murderer though, it's definitely the guy's brother.
Imagine an infinite number of alternate dimensions, sliced thin like salami and all layered together in a delicious sandwich of universes. In these parallel strata of time and space, the Squishables are very, very different.