1000 Splended Suns Higher Level Question

Destruction was a recurring motif throughout the story which was "marked by death and loss and unimaginable grief". Even through so many hardships Laila, Mariam, and the family still managed to make it. There was a certain element that fueled their drive. Discuss what was the seed of hope that was planted to make for triumph in 1000 Splendid Suns.