What is the theme of story Shooting Dad by Sarah Vowell?

In her essay "Shooting Dad," Sarah Vowell explores the theme of family relationships and the dynamics that shape them. She narrates her strained relationship with her father, a Vietnam veteran who suffered from PTSD and alcoholism, and how it affected her childhood and family life. Through her reflections, Vowell highlights the complexity and challenges of dealing with family members who may have unaddressed traumas and the role of understanding, empathy, and communication in overcoming obstacles and fostering healthier relationships.