Nasreen's Secret School teaches us that some people will take dangerous risks to go to school because learning is very important to them. The text conveys this by describing how Nasreen's grandmother takes her to a school that is secret because girls aren't allowed to go to school.
Delia's action shows that she loves her new husband Jim enough that she is willing to sacrifice something she values in order to get him a Christmas gift. She has an unselfish, loving character.