Mrs. Cantillo is the mother of Andrea Cantillo & Tomás Cantillo and grandmother to Brock Cantillo.
Mrs. Cantillo interrupts Jesse Pinkman and Andrea making out at Andrea's house by returning early with Andrea's son, Brock. She looks disapprovingly at Jesse. ("Abiquiú")
Mrs. Cantillo was at Brock's bedside when he was admitted to hospital after suffering from the poisonous effects of the Lily of the Valley. ("End Times")