Complex sentence: As an adult, among her notable roles include Crystal in the American action film', and Katie Sutherland, otherwise referred to as "Neil's sister", in the award-winning British comedy "The Inbetweeners".
Split into simpler sentences: As an adult, her most notable roles include Crystal in the American action film'. She also appeared as Katie Sutherland, otherwise referred to as "Neil's sister", in the award-winning British comedy "The Inbetweeners".