What type of abuse did Trina's father inflict on his family?

Trina's father inflicted physical abuse through beating and verbal attacks, which is a significant theme in the narrative of "Just Mercy." This type of abuse is not just about the physical harm inflicted but also encompasses the psychological trauma caused by verbal attacks. Stevenson often highlights how such domestic violence can perpetuate cycles of trauma and affect the lives of those involved, especially children like Trina. Physical abuse creates an environment of fear and instability, which can lead to serious long-term effects on a family's well-being. The focus on physical and verbal abuse illustrates the broader context of societal violence and its impact on marginalized communities, tying into Stevenson’s discussion of justice and mercy within the legal framework.