On August 1, a woman borrowed $600.00 from her brother to enroll in beauty school. The woman had promised to pay her brother on October 1. On October 2, the brother phones the woman and says, "I really need the money you owe me to pay for my bar application, which is now due. If you give me $400.00 by Sunday, I will relieve you from payment of the additional $200.00." The woman, noting a bargain, pays her brother the $400.00. The brother does not give the woman a discharge of the debt. The brother then sues the woman for the additional $200.00.

what will the outcome Explain in detail.