It's exactly what she means; in a world where everyone has blood on their hands, the only way Rosita - indeed, anyone who's happy in Alexandria - knows how to show how serious she is about her affection involves a willingness not to hesitate or back down, ever, when blood is on the table. She is not ashamed of it and no one can make her.

But even if she didn't know what, exactly, Jesus got out of Rosita signing a contract with anyone let alone a friend of his friend's, she did trust him enough to entertain it. To do it. She considers him now.

"How did you know, though? What makes you so sure?"