It's a pretty lengthy walk from this sector to where they're staying in the Wood Sector, but Annie's already got a mind for the shortest route and she's aggressive about holding point and leading the way for now. She's no team player, never has been, but she's also slowed herself down to accommodate Bertolt's pace. She couldn't possibly be bothered to communicate that or indicate in any way, but it's clear to her that he's as broken down as she'd been when she first arrived. For the rest of the walk to the tree-filled Wood Sector, she'll ignore her comrades in favor of their surroundings.