Yeah, I never pictured Julia as the murdering type. It was pretty ambiguous whether it was a mercy killing or malicious. And her "Oh my God, who did I kill" expression when she saw her mom just raises more questions.
SHE'S THE CARVER!!!!
I loved the myspace/carver promo at the end. Funny stuff. It's pretty innovative to explore a non-traditional promotional avenue like that. 10 steps ahead of us, huh??