Also, Laura knew of the benefit. She was the one who paid for the child care expenses. She was aware of the amount she was spending on monthly child care, and she was well aware of the amount she was receiving from Mark. When questioned by the trial court about receiving a benefit from Mark's payments, Laura, through her attorney, admitted receiving a benefit to which she was not entitled. Finally, Laura would be unjustly enriched if Mark was not reimbursed.
Enrichment is unjust if it is a result of money paid by mistake.
He diligently paid the court-ordered amount, which was based on information provided by Laura. Mark believed the child care expense to be that which she claimed. It was not until August of 1997 that Mark became aware of the amount Laura actually paid for child care. She still did nothing about it. Reimbursing Mark is necessary, then, to prevent Laura from being unjustly enriched at Mark's expense.