Lily has already expressed her reluctance to cry in front of her daughter, and as such appreciates Rosemary’s stoicism; Lily knows Rosemary does not need to adhere to an academy’s rules to be a good person in her estimation. Lily appreciates that Dad took charge of his own fate and made the best of his lot; as such, his life was all that it could be, and she finds no reason to mourn his death.