Well!

Now that was unexpected, thought Kitty as Derf allowed the gnome to bite him - and then spun to take her spell. The gnome quickly retreated, and she was left staring at Derf's stunned body.

"I'm sorry! That spell doesn't HURT anyone, you know," she said, a little reproachfully, because honestly. "I was only going to stun it to prevent it from biting you. Well, hold still so I can heal you." Of course he couldn't move, what was she thinking? She pointed her wand at where the gnome bit, and uttered, "Episkey!"

Then she turned to regard the nearly uprooted tree, along with her two ferns. "You won't want to take the tree you were taking then, I assume. You could take one of these ferns instead," she said, gesturing to the fern trees. (Lincoln was just standing by, grazing.) "You'll be able to move in a few moments. I'll cut the tree for you."

She pointed her wand at both fern trees and shouted: "Diffindo!" Then she got back on Lincoln and chanted the rune while clutching her pendant. Lincoln bent down and they managed to get the fern in his mouth. (The tree was just three feet tall and not very wide.)

Then they flew back towards the barn, and the only thing bothering her was a nagging sense of guilt.