Learn more about Feed My Lambs which offers tuition-free Christian education donated food, and in turn, she developed a program to give that food to the poor. and Paynesville, Liberia; and in Piedras Negras and Nava northern Mexico. YOU CAN HELP HUNGRY CHILDREN TODAY! Since , Feed the Hungry San Miguel has been committed to improving the health and wellbeing of Missing: piedras negras. Jun 26, - Former missionaries Karen and David Glenn Smith recount in vivid detail the fear and violence that prompt people to attempt immigration to the.