Why don't tom and lily go back to the hatching's after picking up their scooter?

Tom and Lily don't go back to the hatchings after picking up their scooter because they are likely distracted by their adventure and the excitement of riding. Their focus shifts to enjoying their time together and exploring, making the hatchings seem less important at that moment. Additionally, they may have decided to prioritize their immediate fun over returning to the hatchings.