What are the main character development and plot points from chapter 20 to the end?

In Chapter 20, Minerva demonstates great strength when it is revealed that she sang for the five hours it took to be transported to Espanola.

In Chapter 21, we learn that Miigwan and Isaac were captured and taken to boarding school. Miigwan escaped during a fire. During this chapter he "sings" his sadness.

In Chapter 22, Frenchie learns that Derrick is Clarence's nephew. Derrick has set his sights on Rose, creating jealousy between the two. Frenchie leaves the circle angry.

In Chapter 24, it's Hunting Day, and Frenchie is allowed to join the others for the first time. Derrick is not included because he isn't prepared. Frenchi and Rose have an argument.

Please post your questions separately.