how do I answer this scenerio?

During her lifetime, Betty accumulated a large quantity of registered gold coins totaling over $500,000 in value. Betty began to see the sun setting in the waning years of her life and began making plans to dispose of her assets among her beloved children. Part of her plans was to give her collection of coins to her favorite son, Carlos, who at the time was performing mission work deep in the jungles of South America. Betty executed and filed a registration of transfer of the coin collection to Carlos. She then attempted to contact Carlos on his satellite phone and called his last known location to advise him of the transfer, but she was unable to contact him. The best she could do was to leave Carlos multiple messages. One month later, Betty passed away without ever hearing from Carlos. Betty's will was read, and it was discovered that the language in the will bequeathed all of her coins to her daughter, Carey. Carey took possession of the registered gold coins. If you were Carlos, how would you convince Carey to give you the coins after returning from your trip?