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Mom's resentful that she has to work so hard, which obscures her guilt about actually wanting to work so hard.
Dad's guilty about being less driven than Mom, but thinks it's wrong to feel that way. So he hides behind a smokescreen of cluelessness.
Quinn wears superficiality like a suit of armor, because she's afraid of looking inside and finding absolutely nothing.
And I'm so defensive that I actually work to make people dislike me so that I won't feel bad when they do.