Sophie may have ambitions to move on at some point in the future, but I do genuinely think she's happy at the show and continues to improve/learn her craft, what I love about Ziggy is that she's a very fun, wild spirit, tomboy, complex, flamboyant, likeable, entertaining character and is gorgeous.
Who knows.. Maybe Sophie secretly did think about moving on, but the situation RE COVID-19 has affected the Acting industry a lot, a lot of Actors/Actresses in the industry are doing work outside of the Acting industry to help provide for themselves, their families and pay the bills.