Much happens in the book after last post's summary. Werner has many troubles and it seems that his life gets much rougher as the book progresses. Frederick goes missing one day and, true to the saying, curiosity kills the cat when Werner finds out that after all of the bullying, some boys have hurt Frederick so badly that he needs surgery and suffers severe brain damage. This absolutely knocks Werner off his feet and he spends most of his time in a daze. To make matters worse, he is drafted to the army despite his young age. There he is reunited with Volkheimer (who was drafted a bit before) and a few other soldiers; they are all put in one crew as a form of bounty hunters who use the radio direction finding device that Werner creates to find partisans that try to sabotage the Germans. This role takes a toll on Werners mind as he has to see many deaths, some of which weren't as necessary. By the time he gets to Saint-Malo he develops something of a conscience, hiding radio transmissions from the crew including those sent by Etienne and Marie-Laure. Those two grieve over losing Madame Manec to illness and decide to carry on her sabateur work, getting codes baked into bread from the baker and reading them over Etienne's hidden radio transmitter in the attic. Marie-Laure is still saddened from the absence of her father but she gets along with Etienne and the support of the other ladies that were friends with Madame Manec. She frequently goes to a grotto that she was told about and listens to the snails and other marine life there.
If I were in the book I wouldn't mind being either Werner or Marie-Laure's friend. They both share a deep curiosity for how and why things are the way they are. If I were to be Werner's friend I would try to support him through the rough times that he is having, maybe trying to take his mind off of it in some way. If I were Marie Laure's friend I would probably help with the sabotage that they do and also describe things to her like her father did. In Werner's case I would get along well with Volkheimer because he seems to be a gentle giant that has good advice at important times. I would get along with Etienne because he would have many stories to tell and things to teach. I would probably not get along with either of the Neumann's in Werners crew (probably one more than the other) because they seem to be too annoying and it would drive me mad. There are not many people that I wouldn't get along with in Marie-Laure's storyline but I would probably scorn the occupying Nazis for taking so much from us, down to essential needs.