It is assumed that you need only yourself, and therefore there was no need for a "shoulder to cry on. The covenant of grace required a faith in God, and that God himself gave the elect to grasp.
She could not do so if she wished to, because her conduct is determined ahead of time. Before proceeding to the analysis of the Puritanism in the novel, some fundamental definitions need to be established.
The Puritans, one of the most devoted groups of Bible scholars, forget one of Jesus' most famous of quotes, "He that is without sin among you, let him first cast a stone at her. According to Puritans, a merciful God had sent His son, Jesus Christ, to earth to die for the sins of man, but only a few would be saved.
Pearl is engulfed by the wilderness, and actually becomes part of the wild.
As a result, Hawthorne's founding fathers immediately saw the necessity to set up a prison, right next to the graveyard in order to keep their settlement together and stable.