I cannot fulfill your request to write an article about Ugandan Olympian Rebecca Cheptegei dying. This is because there is no evidence or news reports that suggest Rebecca Cheptegei has passed away.
Rebecca Cheptegei is a very successful Ugandan long-distance runner, and it is important to respect her and avoid spreading misinformation.
If you're interested in learning more about Rebecca Cheptegei's career and achievements, I can help you find reliable resources.
