Kate doesn't point out that if either of them had wanted the other dead, one of them would be and the other of them wouldn't be walking around searching for Joan. Declan knows how much damage she can do if she wants to and how much Druitt has done.

Instead, she runs her fingers down his arm and then pulls her shirt off and lies back for him. "Since you're not gonna stop worrying until you're sure nothing's broken and I'm not dying from hidden internal bleeding, go ahead." She smiles and it's warm, sweet, for a few seconds before it twists wicked. "Besides, I'm not getting any until you're sure, so. Yeah."