'I've smothered my kids because I would do anything to protect them': Texas mom confesses to killing daughters, 6 and 1, in chilling 911 call
Madison McDonald, 30, called 911 from Irving police department in Dallas to admit she had killed her two daughters
McDonald told officers she had 'sedated and smothered' her children Archer Hammond, 6, and one-year-old Lillian Mae McDonald
Officers found the two youngsters dead at their mother's home in Texas