Pen doesn't say anything for several long minutes. She's concerned primarily about the mission and not Anna's potential feelings there. She'd been joking. But when she begins to notice the way the gal's walking, she skips out in front and puts both hands out to stop Anna. Given the height difference, who knows where she might touch if Anna doesn't stop.

"You seem distracted. Is it because of what happened the last time you were on a mission?"

Because of your eye, she leaves unsaid, trying to be more tactful.