She flinched at the sound of the gun, but managed to maintain her balance on that tree branch. It was the inhuman eagle like screach that caused her to grimace a bit, and hiss; more on instinct than anything out of sheer want to do it.
Christina had also noticed the creature disappearing into thin air, and for a brief moment she was curious. This, however, disappeared when George started to exam the base of the tree. Whatever the creature was, it had been digging for something, but what, she didn't know.
Without giving it much of a thought, Christina quickly climbed down the tree, and proceeded to watch George.