How does Dr. Shields gain Jessica's trust?

Shields gains Jess’ trust by getting her to talk about Jess’ role in her sister, Becky’s, traumatic brain injury. Jess believes that because she was supposed to be watching Becky but had instead snuck away to go to the corner market that it was her fault that Becky was hurt. Shields tells Jess that she was not at fault in Becky’s injury. She comforts Jess by putting a cashmere wrap around Jess in an act that seems impulsive and loving. In reality, Shields had already bought herself a new wrap to replace the one she gave to Jess. The act was not spontaneous at all but one intended to make Jess feel as if Shields cared for her and accepted her.