Brett joined the cast of "EastEnders" in 2004 and was asked to dye her hair red and keep it short for the part. She also put on an English accent to disguise her natural Scottish accent. Brett described Jane as "warm, kind, caring and nurturing but she's not somebody that will be pushed around. She is quite feisty. She's a matriarch. Not as a dominant woman but she's definitely in a matriarch, she's the centre of a family in the making for "EastEnders"."