Lesley was walking back to the hideout with her new friends after they invited her to the falls. They should have been back a while ago, but Rio insisted he took her to other beautiful places he knew around the hideout, while Leo and Arc were forced to go for a walk everywhere to follow them in their little tour. But she did not regret coming with them. Her eyes were filled with beautiful things that only nature could provide.
They are accompanying her back to ensure her safety, especially now that it is already dark. There wasn't any light around, so she really needed their assistance. Catharina said it was on purpose so as not to attract attention from outsiders. Nobody except them can know that Crimson Clan's hideout is in the middle of this beautiful forest. That's why the place is so dark every night.
Fortunately, Leo had lent her a small flashlight. At least she is not completely blind. Even though Leo was often rude and grumpy, she could tell he was a good man.