I think the "die doing what you love" cliché is less about the how the person died and more about the how the person lived. She was taking a risk every time she pushed her limits diving. But, apart from the last one, each of those times added to the enjoyment of her life that she wouldn't have experienced if she hadn't been willing to risk death. It's entirely plausible to think that the 53 years of life she had were more enjoyable than 80-something would have been without the enjoyment of diving. It's why people who take on these risky sports choose to do so.