Jahi's family successfully fought a legal battle to keep her on life support after doctors at the Benioff Children's Hospital in Oakland, California, said the hospital could no longer care for her because she was brain dead. Since then, the family has argued that she is not brain dead and may recover.
"Today marks one year [since] this tragedy happened at the Children's Hospital Oakland, and we want to thank God for keeping Jahi ALIVE and WELL against all odds," the family wrote on the Keep Jahi McMath on Life Support Facebook Page.
The Terri Schiavo Life & Hope Network, which has supported Jahi's family throughout the ordeal, said in October that the teen was "showing signs that may prove the hospital designation wrong." Jahi's mother, Nailah Winkfield, has said her daughter responds to verbal commands.
This week, the McMath family gave a special thanks to their attorney, Christopher Dolan, for fighting for Jahi as if she was his child.
"Without him, they would have killed, Jahi," the family wrote on Facebook.
Jahi's relatives also thanked their other supporters.
"Thank you to all who respected and still respect our choice to save Jahi," they wrote. "Jahi's life IS worth the fight. Jahi McMath is ALIVE and doing well because of you. God bless you."
The Benioff Children's Hospital said in a statement to ABC News that its heart continues to go out to the family.