Susan celebrated her sixteenth birthday. Two weeks later she went shopping for a car using money she received. She became frustrated with the process and asked her father to select and purchase an appropriate car on her behalf. She trusted her dad to know what she would like and also thought he was more knowledgeable. He found a car and purchased it, signing as her agent. Unfortunately dad bought a large gray four-door sedan and Susan wanted something sporty. Can Susan disaffirm?