Speaking to BBC News, Murray’s mother Ros said: “The worst thing that could possibly happen to us has happened.
“There’s nothing that Meta can do that is worse than what’s happened so we’re up for the fight.
“We’ll take it as far as we can.”
The lawsuit, filed by the Social Media Victims Law Center (SMVLC) on behalf of Mark and Ros Dowey, is believed to be the first UK case of its kind.
Murray’s parents are named alongside a woman, Tricia Maciejewski, from Pennsylvania. Her son, Levi Maciejewski, took his own life at 13 years old.
