In this scene, Lizabteh watches Miss Lottie tend to her marigolds from afar. She is trying to decide whether or not to join her friends plan to throw rocks into the garden, or to act more mature.
After seeing her dad cry over not being able to provide for his family the way he used to, Lizabeth is confused and upset and doesnt know what to feel, so she decides to go to Miss Lotties house in the middle of the middle of the night anf rip out all of her marigolds she had grown.
Years after Lizabeth rips out Miss Lotties marigolds, she realized how wrong and childish it was. Lizabeth then decides to plant her own marigolds in honor of Miss Lottie.