How did mama and big ma react to the news of the stuck bus?

In "Roll of Thunder, Hear My Cry," Mama and Big Ma react with concern and worry when they hear about the stuck bus. They understand the potential danger it poses for the children, particularly considering the racial tensions in their community. Their protective instincts kick in as they consider the implications of the incident for their family, reflecting their overall anxiety about the safety and well-being of their children.