American Olympic skier Lindsey Vonn shared a tragic personal message on social media Saturday night.

Vonn's mother died about a year after her ALS diagnosis. "My sweet mom, Lindy, lost her battle with ALS. She died peacefully with me.

American Olympic skier Lindsey Vonn shared a tragic personal message on social media Saturday night.

After her diagnosis holding her hand, exactly one year. I am so grateful for every moment I had with her,

but I am also grateful that she is gone." suffering and peace. She was a shining light that will never go out and I will forever be inspired by her.

If you would like to donate to ALS research on behalf of my mother, please go to the link in my bio,” she wrote.

Our thoughts are with Lindsey's friends and family during this difficult time. May her mother rest in peace

Lindsey Caroline Vonn; born October 18, 1984) is an American former Alpine World Cup competitor on the U.S. Ski Team. She has won four overall World Cup titles