Katrina was taken in by Akira. She looked up to him so much that she asked him about staying in the pack as a leader forever. Akira said that one day he won't be around and his heir would take over before her uncle Shiro does.
Present:
Katrina lived on and saw Akira's heir become the leader of the Enlightened Pack. She hangs out with Robin because she knew that the others hated her for her blindness. Katrina didn't mind that Robin was blind and would help her get around when she runs off or takes a walk in the snow.
Katrina asks the pack leader about moving to another biome but the new leader decides to keep the pack where it is due to Akira's reason: The pack must survive near or on the ice to stay alive.
After hearing this Katrina understands but doesn't find her old leader's tale to be true. She lurks around other biomes when she gets tue chance to. Others seemed to have noticed her leaving the pack camp at night. The leader questions her on her actions but she says that she would never leave the pack at night as Akira's spirit comes to her and tells her not to lie.
Katrina tells the entire pack that she does go for walks at night because of what their new leader suggested when asked to move the pack back to a better biome. Everyone understands but let's Katrina know that it would be up to the pack leader.