Final answer:
Mr. Malone tells Deza the phrase 'like finding a needle in a haystack' won't be necessary because it signifies a significant forthcoming change in her life, likely indicating an end to previous struggles or difficulties.
Step-by-step explanation:
The phrase “like finding a needle in a haystack” won't be necessary anymore, as stated by Mr. Malone to Deza, likely suggests that Deza's life is about to change in a significant way. It is a metaphor indicating that the difficult circumstances or the challenges that Deza has been facing are going to transform, rendering the old adage irrelevant in her new situation. This might be through a positive change in the family's fortunes, or a new opportunity or insight that simplifies previously complex problems.