People like Beth
How do you think it'll work out if Beth decides to open up more even with how she felt throughout the movie. She knows she loved Buck more than she does Conrad, she refused to show it even until the end. We as audience are used to see this as bad behavior and it deserves the hate. But it's understandable that she tries to hide her true feeling because she knows it's wrong.
Now how would it plays out in different scenario if she cares, expressing her honesty, her true feeling of how maybe deep down she felt that it would benefit her more if it was Conrad instead of Buck. Would that be even more devastating to Conrad? She could act more loving and be a better mother in the future, but that doesn't change the fact that in all honesty that's her personality. Could people like that change?