that's a power move right there. >> in diana's own words, she told me any marriage prince charles might have made could never be as strong as the relationship he had with camilla. and that's what she was battling with from the outset. >> but she has something that camilla doesn't have, which is her youth, her beauty, her sparkle, her charisma. and that's something she's going to hold on to and use. >> diana was incredibly determined to make charles love her. >> her role was to triumph in the fairytale over the wicked lady in the house down the road. ♪ >> one of diana's early engagements was an evening at the goldsmith's hall in london.