Question: Why wasn't Dale arrested after he hit the officer's sister and beat up two other people?
Answer: Plus The sister would have denied it. She said she fell down and just like Kurt added it's a small town plus he already had people on his side when he jumped on the family at the dinner. Plus his girlfriend jumped in mom face because Dale was mad at husband.
Question: When the girlfriend is at Dale Massey's grave at end of movie, it seems like it showed her angry face and then cut away to the credits. Were they possibly thinking of doing maybe a revenge sequel?
Question: Did Leah sleep with her boss?
Answer: No.
Chosen answer: If she arrested Dale, her sister (Dale's gf) would be upset. But mostly, it's a small town where they all know each other, and that's just how things work.