She didn't mean to sneak up on him, it was just that she didn't really have as much control here over her comings and goings as she'd had at home. Which was why, on one of those trips to the closet, she was just there when he closed the door again, probably looking at least as surprised about at as he would.

She rallied easily enough, however, "Oh, hiya. And sorry, really wasn't trying to sneak up on you, I swear. If I was trying I think I'd have done better."