One young victim of the Texas massacre at an elementary school claimed she was able to cover herself in blood from a friend and pretend to be dead while waiting for help.

CNN's Miah Cerrillo (11 years old) said that she called 911 Tuesday from the dead teacher's cell phone and waited for three hours for police officers to arrive at Robb Elementary School, Uvalde.

Salvador Ramos (18 years old) was in the school for over an hour when he was fatally shot by Border Patrol tactical officers. According to high-ranking law enforcement officials, this is according to a confusing timeline that frustrated parents and others who had asked police to enter the school.

Miah claimed that when the shooter moved into another room, she heard screams as well as a lot more gunfire. The gunman then began blasting music.

The children who survived the attack, which killed 19 schoolchildren and two teachers, described a festive, end-of-the-school-year day that quickly turned to terror.

Samuel Salinas (10 years old) told ABC's Good Morning America that he and his classmates made up stories to pretend they were dead after Ramos opened fire. Samuel was hit in the thigh with shrapnel.

Samuel, who was in Irma Garcia’s class, said that "He shot the teacher then he shot all the children." Garcia was killed in the attack, and Joe Garcia, her husband, succumbed to an apparent heart attack on Thursday.

Gemma Lopez (10 years old) was in a classroom just down the hall when Ramos entered. "Good Morning America," she said, that a bullet had pierced her classroom wall just before any lockdown was called.

Amerie Garza, her best friend, was killed in the rampage.