"Atkins told the grand jury that she stabbed Frykowski in the legs and that she held Tate down while Watson stabbed her. She also testified that Tate had pleaded for her life and that of her unborn child, to which Atkins replied, "Woman, I have no mercy for you." She also denied her earlier statement to Howard and Graham that she had tasted Tate's blood."
http://en.wikipedia.org/wiki/Susan_Atkins
And indeed that is what Susan should be told now.