This passage describes an important event in Gilly’s life that compounded the trauma she experienced when Courtney placed her in foster care. Gilly allowed herself to love a foster family once—and they ended up breaking her trust. Readers can infer that there were likely rules in place that contributed to this outcome, but this doesn’t matter to Gilly. Only the pain, and what she learned, have stuck. With this, the novel acknowledges that while the foster care system plays an important role in caring for children, it’s not always set up to truly serve their needs.