It doesn't seem to have yet appeared in English media based on a quick and flawed search, but…

https://www.expressen.se/nyheter/kungligt/anki-wallenberg-dod-i-batolycka-i-schweiz/

https://www.is.fi/kuninkaalliset/art-2000006145956.html

Ann-Christine "Anki" Wallenberg, a member of the Swedish mega-rich Wallenberg banking etc. family and a very close personal fried of the Swedish king and queen as well as Princess Madeleine, is reported to have drowned in Switzerland. Her boat was caught in a storm on Lake Geneve.