The Refreshment Lady first appeared in Peter Sam and the Refreshment Lady. She was about to board the next train when Peter Sam rushed out so he could get there before Henry departed from Crovan's Gate. She was furious about this when they got there until she explained to Peter Sam that Henry's train was a guaranteed connection.
In the seventh season, she was trying to find the best location for her tea shop in the Skarloey Railway. Peter Sam took her to all the best places, but she couldn't make up her mind. After a storm blew over, Rusty was clearing debris and both he and Peter Sam discovered an old railway coach. Peter Sam decided to turn it into a mobile tea shop. The Refreshment Lady was so delighted about it that Sir Topham Hatt decided that Peter Sam could take her around all the places she wanted to sell her refreshments.
She was also one of the important visitors Thomas was taking and was left behind at Black Loch.