Santa Fe High School shooting Fund

Cynthia Tisdale was a substitute teacher at Santa Fe High School, her family told CNN. Her niece, Leia Olinde, said the family was notified of her death Friday night.

Tisdale's brother-in-law, John Tisdale, said in a Facebook post Friday night that she was a member of the Anchor Bible Baptist Church in Pharr, Texas.

John Tisdale also said in his post that his sister-in-law's husband, William Recie Tisdale, is "in bad health with a terminal lung disease." The couple has four children.