Amy promises in writing to pay her cousin Edgar,who is dangerously obese, $10,000 if Edgar loses 100 pounds within eighteen months. Edgar agrees, and undergoes an extensive weight reduction program under his doctor's care. Edgar loses the weight within the agreed upon time, and fees much better. He contacts Amy and asks for the money. Amy refuses to pay, alleging there was no valid consideration for it, and Edgar is much healthier now,which is the most important thing. Edgar files a suit against Amy. In whose favor is the court likely to rule, and why?