Problem: Kellly was employed to sing at Lion Night Club for three weeks. Lion Night Club paid Kelly an advance of RM5000 and agreed to pay another RM10,000 after the performance of the whole contract. On the day she was due to perform; she was infected by H1N1 influenza and was hospitalized for two weeks. She was then quarantined for another one week. Advise Kelly and Lion Night Club based on the above facts.