This amicus brief was written in response to a trial court ruling to modify a parenting plan involving a child with disabilities, despite the trial court’s reliance on a Guardian Ad Litem report that did not prioritize feedback from current medical personnel. Issues include whether it is in the child’s best interest to prioritize medical provider feedback in cases devoid of specially-trained Guardian Ad Litems, whether a Guardian Ad Litem should be required to consider current provider opinion as a mandate to work in the best interest of the child, and whether prioritizing expert and current medical personnel opinions is in accord with current scientific research and Washington’s compelling interest in child protection.