A horrible (although 'horrorful' would be an awesome word, horrible means terrible; abhorrent means one should detest it) meeting

One of the people Bruno misses the most is his grandma. She was a 62-year-old woman who had dedicated her life to performance. She lived with Grandfather in Berlin, in the same neighbourhood where Bruno likes so much to live.
Bruno loves his grandfathers with all his heart. He misses the family parties, where all the relatives met together to share their experiences, to sing, dance, and perform. However, they do not see each other, since there was an argument in the latest party they had. On that occasion Father was so proud, because he had obtained a new status: “Commandant”. As such, he had a new uniform that showed his power. All the family was very proud of him. Everyone except Grandmother. She felt upset and hopeless about her son’s job. She didn’t feel proud at all of the things that German soldiers were doing for the country’s safety and honour. So she told the family what she thought during the party. As a consequence, the family argued and split* up.
Bruno doesn’t know what really happened there. He is sad, because he has moved away and cannot see his grandfathers, who are far away now. So he decides to write them a letter telling them the news.