Why do Sheriff O B Dickerson and Grandma not have a very good relationship?

Sheriff O.B. Dickerson and Grandma have a strained relationship primarily due to conflicting values and perspectives on law enforcement and community issues. Grandma often sees the sheriff as an authority figure who does not understand or prioritize the needs of the community, leading to a lack of trust. Additionally, personal history and past grievances may contribute to their tension, making it difficult for them to communicate effectively and find common ground.