She is very talented at dueling, so beating her in a duel will pay well, more than dueling with a normal Sim or another vendor, such as Faerie Queen Mara, and the pay is usually 27 MagiCoins. However, in toadstool races, she will simply walk between them, making her relatively easy to defeat. It will be even better if the Sim learned the teleportation ability from a Magical Growth. She will most often give Wizard Eyelashes as a quest reward.