The twins, who played Jessica and Elizabeth Wakefield in the '90s TV adaptation of Pascal's young adult book series have paid tribute to the writer following her death on 28 July. The 48-year-old sisters told People in a statement, "She touched the hearts and minds of so many with her entertaining and relatable portrayals of teenage life. We always felt loved and appreciated by Francine. She'll be greatly missed." Brittany also posted a throwback photo of herself on the set of the show…