First, don't let it tear you down, it happens to everyone. Second, 3-5 inches of penetration is enough to kill her. Third, what type of head were you shooting?? Fourth, go back and get on your hands and knees and search where the last place you saw her.. I asked about the head because if it's a fixed blade then you know the blades are already open, if it's a mech they may only be open partially if you hit boe or cartledge, but it can still be lethal.