Quote 1
Mother: Everybody was in such a hurry to bury him. I said not to plant it yet. [To Keller] I told you to…! (1.272)
Kate blames Joe for accepting Larry's death too soon – and perhaps for the romance unfolding between Chris and Ann that she's anxious to prevent.
Quote 2
Mother: You above all have got to believe, you…
Keller: [rises] Why me above all?
Mother: …Just don't stop believing…
Keller: What does that mean, me above all? (1.309-312)
Kate doesn't say much, but she says it clearly enough for Joe to understand. He above all has to believe that Larry is still alive, because if Larry is dead, then Joe killed him.
Quote 3
Mother: Don't, dear. Don't take it on yourself. Forget now. Live. (3.182)
We don't know, guys. What do you think? Should Chris just forget? Isn't that what Joe and Kate have been trying to do all along?