Diesel even walked her down the aisle at her wedding in 2021. Meadow Walker and Vin Diesel arrive for the Premiere of the film "Fast X," May 12, 2023, at the Colosseum monument in Rome.

Meadow Walker (left) and Vin Diesel at the “Fast X” premiere in Rome. Walker Thornton-Allan, 24, was the only child of Walker, who died at age 40 as passenger in a single-car crash.

FILE - In this April 29, 2011 file photo, actor Paul Walker poses during the photo call of the movie "Fast and Furious 5," in Rome. Walker’s brothers are filling in to help finish shooting on ...