I live with him. There's plenty of time for me to drag you both by the ear. Don't whine, please, it isn't attractive and it isn't doing anything for my mood.

[She comes up even with him, glancing over. She'd normally stride on ahead, but she's leery of doing that and having him dash away while her back is turned.]

I need you because I want to make sure I have the right books. And because I can always use an assistant. Besides: I'm certain you've nothing better to do right now.