While little of their relationship is shown, they seem to be well-acquainted enough to be on a first-name basis as she remarked "Hey, you're Greg's boy" when meeting Steven.
She wears a pale blue shirt/blouse with a turned down collar and short sleeves with the postal service logo on it. She also has blue/grey wide waistbanded shorts that end just above the knees and below that, she has a support bandage around her left knee. She wears white high-leg socks and brown slip on shoes too. She is also seen with a mail bag similar to Jamie's.
Off Duty Appearance
Standing behind a crowd of people, only her outer jacket is visible in the cold night air.
She seems to have a recovery band on her left leg.
She has her first speaking role in "Love Letters", where she appears to be a mailwoman, co-worker to Jamie, and her name is revealed to be Barbara.
Her physical appearance (i.e. her face and hair) greatly resembles that of her daughter, Sadie.