What quotes in The Lovely Bones would best decribe how Jack, Abigail, and Lindsey use isolation to cope with the death of Susie?

In my
opinion, one of the first indications that the family is using isolation to cope manifests
itself in their isolation from Susie's room:

Already my
private territory had become a no man's land in the middle of our house.  My mother had not
touched it.  My bed was still unmade from the hurried morning of my death. (44)

All three use isolation as a coping mechanism in slightly different
ways.  Let's explore the three characters in turn.  

First, we'll begin with
Lindsey, Susie's sister.  Lindsey first deals with Susie's death by isolating herself from
anyone who could help her at school, such as Principal Caden.  After confronted with the
compassion of his "I'm sorry to hear of your loss" statement, Lindsey hits him with
"What exactly is my loss?" (31). Also, Lindsey seeks solace in private, small rooms of
the house, like the bathroom shower.

She would be safe in
the dark--the moist steam from the shower still rising off the tiles encased her. . . . She knew
she would be...