1. I think that abram reacts the way he did before entering egypt because he saw them as sinners and different people from them and seeing him with his beautiful wife would get them angry and confused so they would resort to killing abram. He came to this assumption before they even met the egyptians because he knew a foreign  land would not react well to a beautiful woman and that the pharaoh would want the most beautiful women.

2. I think that sarahi stays silent because the pharaoh eventually realized that she was abram's wife and that it was not the pharaohs wife to deal with. Her being silent i think sent a message to the pharaoh saying to him that she dosent really want anything to do with him. She gains power and respect as a wife to abram.

3. Some human problems that arise from this love triangle are that sarahi gets eventually jealous of her servant with her husband abram and that they conceived a child and then the servant ran away because sarahi was mad with her servant and that they bore a child. So this is some human problems of jealous because i guess this human love triangle has not happened before so they did not know they were going to have this types of problems.