The mood is one of hunger and desire.
The main character's hunger and desire for material goods can never be satisfied, of course -- we are told this from the the title, as she herself could be said to be "gone wrong."
The description of her overflowing shopping cart, the intensity with which she regards the magazine, and her need to buy in bulk all highlight an atmosphere of hunger and desire.
They can learn the character personality, and how they react in certain situations.
The word in the sentence indicates a cause and effect relationship would be "wouldn't"
3) The second one
4) Byron bunks with mom and dad because, mama thought since it was his last night he was going to spend in flint for a while he might like to sleep in their room for the night,