[ It's not a question Jefferson can readily answer-- which is frustrating, since he ought to know. Unfortunately, the accident knocked the specific incident, the straw that broke the camel's back, out of his head. All he knows is they were already over and done with when he came home from the hospital.

So, rather than admit he doesn't know, Jefferson opts for a vague answer: ]

It wasn't any one thing. He was just intolerable to live with. [ He gets a sour look on his face, thinking back to those few awful weeks between the accident and his decision to just leave the house to that man. ] And after the accident, it was obvious we couldn't amicably share the house. Him threatening me with a baseball bat made it clear enough.

[ Not to mention everything else. Jefferson sneers a little and takes another sip of his drink-- more than he should have in one go. The burn of the bourbon has him coughing a little, much to his chagrin. ]