Answer:
She goads her husband into the act, and mocks him for his “heart so white.” But it's Macbeth who stabs Duncan, and who, later, kills the guards so they won't talk, and who, even later, orders the deaths of his friend Banquo and Banquo's son Fleance (though Fleance escapes) and also Macduff's wife and son.
Step-by-step explanation:
I'd assume she killed the guards and most likely her husband.