That was indeed a treat! For some reason (definitely not because I'm a horrible, evil cunt) I spit coffee out laughing so hard about prisoner assassins accidentally ingesting babies. Still giggling about it now.
Her dad's gammy leg... and Mary's crutch... could Mary be Hailey's aunt, or mother? If you're going to be the next Coen brothers, you're going to need a twist like that.
(Yeah, I read through the comments too. First, actually. The best entertainment is almost always in the comments, with or without infant cannibalism.)