"The instructions are very complicated and they are not lawyers in that room, they are lay persons," Brown said. "The key is, if you look at the instruction, in those instructions, you'll find the 'stand your ground' law. And to me, that is the problem."

Brown said even if the jury can't make a decision Saturday, she has faith in the justice system.

"Failure is not an option," she said. "If this jury doesn't do it, there are other juries, other opportunities."