^Not tough? In my opinion, she's one of the characters who has been most changed and toughened by all that's happened. In the beginning she was unwilling to even fire a gun, because of both personal morality and fear, but by the end of Season 1 she had killed a person in defence of someone whom she cares for. That must have taken such remarkable bravery, it's amazing. And in Season 2, she learned to fly a military helicopter when the only flying experience she'd had before was flying small planes. However, with all the changes she's gone through, she still manages to keep her core character more or less intact, also an amazing feat, and like Michael said, "very brave in its own way" (that's not a direct quote, but it's from somewhere in the first season). Pegs is not a warrioress like Riley, that's just not who she is, but her bravery, while far more subtle, is just as remarkable.