Dawn hadn't thought much about Andrew being so friendly towards her. She was just so thrilled to see someone she even semi-knew when she first arrived, and that in itself had caused her to just throw all caution to the wind. Granted, if some big bad had come along and introduced himself to her, she wouldn't have been so happy about it, but Andrew was hardly in that category.
Albeit playfully, Dawn pursed her lips and rolled her eyes. "Fine. Got anything good that Buffy would let me play with?" A moment later, she was grinning, giving him a 'pretty please?' sort of look.