Integration

[SirSapphire]

We'll have to wait until the full episode, but it could be Lion-O is weighing possible danger against certain danger. If he leaves them behind it is possible that they could be hurt or injured, but it he takes them along they're almost certain to. These are children, you do not take children on epic and dangerous quests into the unknown. It's (arguably) much more irresponsible than leaving them on their own.