1)
Why did she say "va'Tikach Es Bni me'Etzli? ha'Mes Hishkivah v'Cheiki"?
1.
Malbim: Also this was a proof that her son did not die. She recognized that he died because his mother slept on him. I did not sleep on my baby, he was only me'Etzli (near me)! The other woman put the dead baby in my bosom to make me think that I killed him!