Her pout dissolved at his admission of 'weakness'--the wording struck her as funny, because she didn't think he really was anything close to weak--and she couldn't help but giggle just a little bit. She didn't flinch or back up as he leaned toward her, merely giving him a demure smile and saying, "Well...you can hardly blame me. I'm only using it for the force of good, after all." She couldn't help but pout again, but only for a split second, as he reached the suitcase before her. After that split second, she was definitely smiling.
"How generous of you, sir, letting me carry a whole two bags," she said with humor in her voice. "Look, doing me even more favors," she said, giving him a pointed glance which clearly indicated that she still felt as though she ought to repay him in some way. She watched as he easily lifted four bags in his arms and couldn't help but raise a brow, impressed. She'd definitely gotten lucky that he'd stopped by to help.
"We-ell," she said slowly, walking backwards to the elevator with the two suitcases in her hands, so that she could still talk to him, "If you insist...I won't make you pick something now. But," she said, remaining firm in this respect, "Consider it an unwritten I.O.U." She pressed the elevator button with her elbow. "If you're ever in need of help, I would be happy to assist. Call it...my neighborly duty." She grinned at him as the elevator dinged and the doors opened, then stepped into the elevator, holding it open with her foot for him.