This is about Women's Suffrage. Why in 1917, women were suffering? They were suffering, because they didn't have any rights to do something (voting), except for living. If they make a separate school for girls and if they get caught, they will go to jail or die.
A girl named Kathleen Bowen is writing diaries of how it's hard to live without having rights to say something about laws or the uncomfortable way that they live. She is the character that meets a lot of people, people that will help women that are suffering. She then meets a girl named Cassie. She likes to act like she is an adult. It's because she goes to college. Kathleen likes her, because Cassie is always happy and she cheers up Kathleen. Her other neighbors don't really talk about fun things. All she can hear is "Women's Suffrage" and "Great War". Cassie talks about things that are related to college. Maybe things that are more related to girls. However, at the end, women are trying to bring signs. Those signs are about women's suffrage. They are going to go to the Great War and put up those signs.
Kathleen is worried about her family and herself. She doesn't think that they are going to survive. However, her mom and all of the other families and friends are pretty confident that they are going to survive. Although, they would have to be careful, because police men are going to be almost everywhere. If one woman gets caught, everyone will die or go to jail. All of the women are in the same place.