Complex sentence: Padbury came to prominance in 1966, when she joined the cast of the long-running ATV soap opera "Crossroads", in which she played Stevie, foster daughter to the show's main character, Meg Mortimer (Noele Gordon).
Split into simpler sentences: Padbury came to prominence as an actor in 1966, when she joined the cast of the long-running ATV soap opera "Crossroads". She played the role of Stevie, foster daughter to the show's main character, Meg Mortimer (Noele Gordon).