The Dryad needs more power to protect her tree and her forest. There's a threat to her tree/forest and needs to go out and kill it. The Dryad is tasked by druids to gather wealth for their grove. The Dryad decides she wants an adventurer's, non-cowards death, as opposed to sitting scared at home (the tree, in this case.) The Dryad needs to find a place to relocate her tree. The Dryad needs to find a way to detach her spirit from the tree.
I hope the hamadryads aren't all girls.
