The happy-ending stories that Marsden has observed mostly occurred in a clinical setting. The rapprochement usually starts out small, maybe with a text message here or there or small talk at a family event. One dynamic he sees often is that a controlling parent - or both parents - turned one sibling against the other long ago. If the parent alienator is incapacitated or dies, the sibling who was aligning with the parent can start to feel differently. "You start to question your own beliefs, and you might slowly start to reintegrate," Marsden said.