[he pauses in his steps, and glances back at her-- face unreadable. Then he walks back to stand next to her. He's already decided what to do about this.]

-- yes. That is the truth, so far as we know.

[pause-- and he cuts to the most important thing, in his level manner] Your son probably won't even know you're gone-- not even for a brief moment. Time doesn't pass in our own worlds, the way it does in this one.