I'm not totally clear on her death inn the opening, she was on her knees with a bastard gloating about having brought her down, then it seems like she breaks a poison pill in her mouth and that guy panics, I'm guessing he was just trying to humilate her and needed her alive but the suicide ruined his plans.
That part is fine but then there is the sfx for shoots fired all over the page, is possible that the pill spread gas in the whole area?