She's a great chess player but she's never been a World Champion. There's no need to embelish her story. She's currently training to become a surgeon at University of Missouri School of Medicine.
She holds the title International Master, so I guess OP thought that's the same as World Champion? But she's currently ranked 6365th of active players.
Ding Liren is the current human "open" world champion, but there is also a women's world championship, currently held by Ju Wenjun. Plus there is a world junior championship, world rapid championship, world blitz, etc. Magnus is probably still the world's best human player, but he decided to drop out of the WC cycle because he got tired of winning it so often, basically.
The strongest chessplaying entities in the world are entirely machines, which have surpassed humans by enormous and uncrossable margins. The top engine for the past few years has been whatever the latest version of Stockfish is. The top human players spend enormous amounts of time studying machine analysis of various openings and game positions.