"She has gone too soon and our family has been completely devastated since then. We miss her. More than anything in this world. Our family will never be the same. Life will never be the same", Angela Lee posted on Instagram.
Lee wrote that her sister had passed on December 26th, but did not reveal a cause of death.
Nicknamed "The Prodigy", Victoria Lee was unbeaten in three fights as an atomweight after following Angela and brother Christian to the ONE Championship circuit, last defeating Victoria Souza via second-round TKO in September 2021.
She took a year off from fighting in 2022 to complete high school and recover from an injury,. but was set to return for her fourth professional fight against India's Zeba Bano at a ONE Championship event on Saturday January 13th in Bangkok, Thailand.
"I am heartbroken by Victoria Lee's passing", ONE Championship Chairman and CEO Chatri Sityodtong wrote in a Facebook post, "May you rest in peace, Victoria. We will all miss you."