Watch Sadisflix. Sadie Miller and Daisy Ashford share a bond. Daisy is the daughter of Caroline John and Sadie of Elisabeth Sladen. As all fans know, Caroline portrayed scientist Liz Shaw and Elisabeth journalist Sarah Jane Smith in the classic series of Doctor Who! In this touching and revealing documentary, Nicholas Brigss finds out what is was like growing up with such famous mothers and the heartbreak of losing them both so tragically early.