Steele, while a patient in a hospital, let a friend use her credit card to buy one tank of gasoline for a trip to Cleveland. The friend not only used the card to buy many other things but also let friends use the card. Steele notified the credit card company of the problem. She claimed that her liability for the unauthorized charges was limited to $ 50 for purchases between the time she loaned the card and the time she notified the card company. Is her claim correct?