GUATEMALA CITY (AP) — The advice of a friend to stay near the door of a semi-trailer may have saved Yenifer Yulisa Cardona Tomás from the deadly end that 53 other migrants met when the truck was abandoned on the outskirts of San Antonio. It was already hot on June 27 when the 20-year-old from Guatemala’s capital stepped out of the warehouse on the Texas side of the Mexico border where she had been waiting and climbed into the back of the trailer. Cardona Tomás was near the door hours later when she lost consciousness. She awakened in a San Antonio hospital.