There were no drugs found. There was no evidence of wrongdoing other than carrying the cash itself which is perfectly legal. This was a domestic flight. But did you know you have to declare carrying cash greater than $10,000 when you leave the country – not just when you enter?
Nonetheless the American Airlines passenger won’t get their money back because they had the bad luck of connecting in Charlotte and because the government decided travel to California is presumptively tied to drugs.