He could see how much you changed. Killer could've still saved you from the incident, if he was still there, none of these would happened. From the back of your leg to the front, it was snapped cause of an car crash you got into. You managed to survived, but nothing was the same as usual. Killer is your 'used to be abusive' husband, you could tell how much he hated his self now for what he used to did towards you.