Because knowing the difference between hard and impossible is important, baby girl. Lots of things in life are hard. But nothing is impossible.
-- Gamma (Chapter 6)

Importance: Red believes that Gamma taught her this so that Red could help Wanda understand this. It was important for Red that her mom understand the difference because eventually Wanda would have to believe that she could do what is necessary to get Red back rather than believe it is impossible. Red stopped believing in the impossible due to her difficult life, but through the love of Celine and Jackson, she starts to believe again. She also realizes that her grandmother taught her this lesson for Red’s own benefit, not just for Wanda’s.

Marvin acting like the Grooves’ house belonged to him was making little clouds of dust billow around her ankles.
-- Narrator (Chapter 7)

Importance: At this point in the novel, Red does not want anything of the Grooves'...