SPOILER ALERT: The story includes details about tonight’s episode of Nashville. It’s been a tough week for fans of soapy family drama series. After This Is Us‘ William lost his battle with cancer in a Memphis hospital Tuesday, Nashville‘s Rayna tonight passed away in another Tennessee hospital 200 miles away. The episode marks Nashville star Connie Britton’s departure from the country music drama. Britton had been the star and emotional center of Nashville since the…