At first I thought Ralphie did it... I really did. As the argument turned into a fight, I started to have my doubts. Ralphie was a piece of shit and obviously didn't care about the well-being of the horse, but I don't believe he killed her. He wasn't upset about it, but it didn't mean he did it.

I think it was Christopher. His reactions were a little suspect to me and he wanted to somehow "thank" Tony for helping him find the guy who killed he Father.

In Chris' junkie state, he'd have thought killing a "gimpy" horse so Tony could get the insurance settlement would be doing him a favor, I guess.

Nick