[He'll just assume she's pleased to see him. Who wouldn't be?]

Ah yes, right of course. Can't stab the murderous parchment, better to burn it. Or perhaps we could find a pair of shears?

[He thinks he's clever. As per usual.]

OR... perhaps it could be useful. If it caused you pain, imagine what it might do to someone less... [What's a tactful way to say this.] ...battle hardened.