[She rolls her eyes at that comment and pauses in stacking the books.]
Oh, so you're one of THOSE adults. I'll show you mine if you want.
[The twelve year old reaches into a pocket and pulls out a good-sized knife in a hilt. She takes it out and spins it expertly in her hand, then holds it out to the woman, hilt first. On the pure iron blade is inscribed the initials W.A.H.]