1)
What is the significance of the fact that Hagar took for Yishmael a wife from Egypt?
1.
Rashi: Everything returns to its source - as Hagar grew up in Egypt.
2.
Targum Yonasan: She first took him a wife called Adisa (who some say was from Mo'av [see also Chizkuni]), and when he divorced her, she found him an Egyptian wife called Fatima.