‘And Pharaoh called Abram and said, “What is this that you have done to me? Why did you not tell me that she was your wife? Why did you say ‘she is my sister'. Now therefore here is your wife. Take her and leave.” And Pharaoh gave men charge concerning him, and they brought him on the way, and his wife, and all that he had.'
The words aptly bring out the superior status of Pharaoh. There is no discussion. Indeed the message would probably be conveyed through servants, although it is possible that, in the circumstances, he might have been brought into the presence of Pharaoh with all the preparations that that would entail (compare Genesis 41:14 which simplified a more complex requirement).
It is clear that whatever the illness was it was sufficient to awe Pharaoh enough to prevent him taking revenge on Abram. Rather than punish him he wants this man with his powerful God to be well out of his way. Pharaoh the god is afraid of Yahweh. There is the specific idea here that Abram was at fault. The writer does not attempt to hide the fact. But he also wants the reader to know that Pharaoh is afraid.
So Abram is escorted to the frontier and firmly ejected from Egypt. But he is allowed to take his gifts with him. In the writer's eyes the superiority of Yahweh is recognised by Pharaoh so that he acts accordingly.