It was dark. The world looks very different in the dark and now Clara didn't know which way to go to get home again. It can be very scary in the dark and all alone...
Clara was enjoying her day of adventure, seeing and learning new things, but hopping and leaping; well, it is good to try new things even if you aren't very good at them...
Clara discovers how much fun it it to try new things even if you don't do it perfectly the first time, or even the second or third time. Learning can be fun...when you try.