Emiliano Sala's sister is reportedly in a critical condition after trying to take her own life.
Romina, who has been the spokesperson for the family since Emiliano's disappearance and death in January 2019, is being treated in hospital, according to the Argentine media.
Sala was travelling back to the UK having completed a transfer to Cardiff City from Nantes two and a half years ago when the plane carrying him disappeared over the English channel.
It sparked a huge search operation from authorities and remnants of the aircraft were eventually found on the seabed.
Sala's body was recovered a few days later but that of pilot David Ibbotson was never found.
Romina has continued to post about her late brother on social media following his tragic death.
Sharing an image on his birthday, October 31, two years ago, she wrote: “There are no words that can describe the pain.
"Happy birthday brother! Where ever you are, give us the strength to go on.
"I wish everything were different… I promise you we will not stop until the end. Kisses to heaven."
Sala had previously played for Bordeaux before joining Nantes, and was signed by then-Cardiff boss Neil Warnock to try and keep the Bluebirds in the Premier League.
His death saw an outpouring of emotion both in South Wales and at his old club, as well as around the footballing world.
Investigations into the crash have suggested the incident was caused by complications with the plane involving carbon monoxide.
