ssatl, I've not chimed in yet, but since you asked: I can't see that the bar would be held liable for your decisions.
That said, I'm not unsympathetic to your plight. I can't begin to imagine the frustration, confusion, hurt, anger and depression you must be experiencing. When I was your age, I did some incredibly stupid things. Things that could have led to my or others' injury or death. So I get what it's like to let alcohol overrule common sense. Unfortunately for you, the consequences of your actions are severe.
It's good that you're going to talk to an attorney. I pray that one day you'll be able to turn this tragedy into something positive.