Targum Pseudo-Jonathan on Genesis 16:5 lets Sarah speak at length, and the speech is a small masterpiece of grief, accusation, and memory. It begins quietly — my affliction is from thee — and then it unspools.
I trusted you would do right by me, she tells Abraham. I left my father's land and my father's house and came up with you into a foreign country. And when it turned out that I could not become a mother, I freed my handmaid and placed her in your bosom. Now that she has conceived, my honor is despised in her eyes.
Then the Targum adds a line that blazes. The peace between us, Sarah says, will be restored; the land will be filled from us two. Nor shall we need the help of the progeny of Hagar the daughter of Pharoh bar Nimrod — who threw thee into the furnace of fire.
There it is. According to this paraphrase, Hagar is the daughter of a Pharaoh descended from Nimrod, the very king who once threw young Abraham into the furnace at Ur Kasdim — a legend the rabbis wove from the name Ur, meaning fire. Sarah is not merely jealous. She is remembering the shape of her husband's life. The fire that almost killed you, she says, is the same family now rising in this tent.
The Maggid hears the whole argument as a warning about origins. Sarah is not denying Hagar her dignity. She is saying: our nation cannot be built on the seed of the house that once tried to burn you (Genesis 16:5). Some lineages carry too much smoke. The Lord, she insists, will spread peace between us, and the promise will come through our own bodies.