During the filming of Great Expectations, Cave worked alongside her younger sister Bebe (who played the younger Biddy), and was also reunited with her Harry Potter co-stars Helena Bonham Carter, Robbie Coltrane, and Ralph Fiennes.
Během natáčení Great Expectations, nejenže spolupracovala se svou mladší sestrou Bebe (která hraje mladší Biddy), ale znovu se setkala s hvězdami Harryho Pottera, kterými byli Helena Bonham Carter, Robbie Coltrane, a Ralph Fiennes.