She sees a feather from the bird in the tree and thinks she will tickle Jamie to encourage a change in pace between them. As she thinks tickle, he confronts the thoughts he has, quite unlike hers as he faces a spiral of thoughts about the hope he has for change in his life.
The lighter green leaf of the scene cuts across the darker tree to the right, adding a three dimensional effect that contradicts the two dimensional effect of the pathway Amber is on. That overlays the blue swirl of Jamie’s thoughts. The swirl returns to two dimensions as the blue swirl is seen through the right side tree.