[To which, Iris replied, equally dryly, without skipping a beat:]

My late sister tried to possess our half sister in order to kill our cousin, but instead ended up possessing our aunt and still tried to kill our cousin, but got our aunt killed instead.

[A moment later, the moment caught up with her and she realized what she'd just said. Both hands flew to her mouth, horrified, as she looked to him with wide eyes.]

Oh! I'm--I'm so sorry! I didn't...I mean...

[It had just sort of...slipped out.]