|Position||Mother of Emma Chesterton|
|Arrived on Sodor||Unknown|
Barbara Chesterton is the wife of Ian and Emma Chesterton to whom their sister went missing following an argument with her parents one evening and took their car out for a ride before she went missing.
Mrs. Chesterton said that Emma is coming out of hospital following her injuries one night when she tripped over and hurt her arm. She is due to come out that afternoon after the announcement at Tidmouth station. She also told them that Emma will be back to normal once her arm is healed and the cast she's wearing will be withdrawn in a few days time. After the conversation with Edward, both Thomas and Diesel set off for their routes.