https://www.annefrank.org/en/about-us/news-and-press/news/2025/2/14/in-memoriam-jacqueline-sanders-van-maarsen/
she actually had significant coverage in the 2001 tv movie. Jacqui didn't go to the camps, her mother found a loophole that kept her and her sister from being deported. She was actually among the first to see Anne's diary
I think there's at least one living link left, and it's her step-sister (they actually did live on the same apartment block)
*one google later* wait there's a second one Nanette Konig Blitz