After the Thin Controller breaks his leg dueling with Skarloey, she learns of the Thin Controller's adventure seeking behind her back, leaving her quite furious. He manages to win her back by romantically comparing his love to her with that of the engine's personalities. Her faith in him renewed, she drives him and the Small Controller to the Lumberyard for their meeting.
Not long after the meeting starts, Madge and Roxanne become concerned with how things are turning out, Madge and Roxanne drive through the door to rescue the Thin Controller.
After the incident, she expresses her disbelief that such dangerous incidents happen to her husband with great frequency. This causes Roger to tell Roxanne about his encounter with Vegard following the Blunderbuss incident. She reassures her husband that he made the right decision keeping them in jail.
Roxanne is compassionate, thoughtful, and lovely. She loves her family very much and is adamant that her husband not go on adventures. She wants everyone she loves to be safe and sound. She is, however, very supportive of anyone's pursuits. Roxanne also has a beautiful singing voice.
She has a history with Vegard. The two are very close friends.