A guardian ad litem... GAL is appointed by a court to be a child's advocate during legal proceedings that involve a minor. You don't have to be a lawyer to be trained as a GAL, but you have to have a moral compass and a heart. Which, actually probably renders most lawyers unqualified for the job.

The Jodi Picoult Collection #2: Perfect Match, Second Glance, and My Sister's Keeper (ed. Simon and Schuster, 2012) - ISBN: 9781476703879