She listened intently to him as he spoke. A twinge of annoyance went through her for a moment, but she did understand his concern. This tree was apparently from his world, so he knew more about it than she did, so she was not going to argue.
When he asked her to check for the root, she vanished momentarily from his sight. As she ran around the tree, dodging a few branches that the tree was trying to hit her with, she noticed a root like the one he had mentioned. Immediately she ran back to him, only appearing to have been gone a few seconds.