Her tasks in Carbo Village do not only include assisting Father Carius with the evening mass; together with the other sisters Tessa also works in town and tends the community orchards located close to the Black Forest.
Tessa is only seen in the beginning of the game. Her few appearances include when Ryudo arrives at Carbo Village where she is first seen, and at Garmia Tower. There she is involved in a ceremony of sealing with the other sisters, but the ceremony fails. At the top floor, Ryudo has to fight two Gargoyles before he can get to Tessa. She however, is badly injured, and requests Ryudo to save Elena before she dies.