that this shall be no grief to you, nor offense of heart to my lord, either that you have shed blood without cause, or that my lord has avenged himself. When Yahweh shall have dealt well with my lord, then remember your handmaid.
So Abigail is there pleading with David. Beautiful woman, has brought all of these things, and she is making good sense. "You know why should you avenge yourself. God will avenge you David. He's taken care of you, and so forgive the foolishness of this foolish man."