In
Genesis 20 it happened again, and God stopped it all before the king touched her. I suspect that is the same with what happened with Pharaoh and Sarah.
Genesis 20:2-4.. And Abraham said of Sarah his wife, She is my sister: and Abimelech king of Gerar sent, and took Sarah. ..(3).. But God came to Abimelech in a dream by night, and said to him, Behold, thou art but a dead man, for the woman which thou hast taken; for she is a man's wife. ..(4).. But
Abimelech had not come near her: and he said, Lord, wilt thou slay also a righteous nation?