alternately, walk into someplace like the magic merchant, into his back room and have the kid follow you (make sure you've dropped a teleporter stone outside). Take the 3 big chairs in the room and throw them against the door so the kid cannot leave, then teleport out.
I call it the "timeout room"...
This would make me feel guity, hey, it is an INNOCENT CHILD after all.
Well, on the contrary, I killed too many 'uman here, be god with them.