Barbara began her practice of law in Maryland as a sole practitioner. She later moved to Adams County, Pennsylvania and was admitted to practice law in Pennsylvania. Barbara maintains an active practice in both Maryland and Pennsylvania. She worked as a sole practitioner until 1988, when she partnered with Thomas Pyle, Esquire. She currently practices law with her daughter Heather Entwistle Roberts. Barbara's primary areas of concentration are family law (including grandparent rights), wills and estates, and criminal law.

Entwistle & Roberts has extensive experience in all areas of family law involving children, voluntary adoptions, paternity, legal and physical custody of children, child support, emancipation, Grandparents' rights, separation, divorce, alimony, and equitable distribution of marital assets.