In the novel “A Thousand Splendid Suns” by Khaled Hosseini, Mariam and Laila develop a strong relationship, very similar to that of a mother and daughter. Several times Mariam passes herself off as Laila's mother. This bond is emphasized later in the novel when Mariam kills Rasheed to save Laila. What circumstances or situations in both of these ladies lives, do you think could have fostered the growth of this relationship?