What does 2 Samuel 14:16 mean?

The woman said, “Why then have you devised such a thing against the people of God? For in speaking this word the king is as one who is guilty, in that the king does not bring home again his banished one.

For we must die, and are like water spilled on the ground, which can’t be gathered up again; neither does God take away life, but devises means, that he who is banished not be an outcast from him.

Now therefore seeing that I have come to speak this word to my lord the king, it is because the people have made me afraid. Your servant said, ‘I will now speak to the king; it may be that the king will perform the request of his servant.’

Then your servant said, ‘Please let the word of my lord the king bring rest; for as an angel of God, so is my lord the king to discern good and bad. May Yahweh, your God, be with you.’”

Then the king answered the woman, “Please don’t hide anything from me that I ask you.” The woman said, “Let my lord the king now speak.”

The king said, “Is the hand of Joab with you in all this?” The woman answered, “As your soul lives, my lord the king, no one can turn to the right hand or to the left from anything that my lord the king has spoken; for your servant Joab urged me, and he put all these words in the mouth of your servant;