A grocery worker at a Dollar Tree store in New Jersey rescued a mom by calming down her crying toddler. Mary-Ann Byrnes was shopping with her two-year-old daughter when the child started having a meltdown. The cashier, Fatimah Leftwich, noticed the struggle and asked if the toddler wanted to help scan items at the counter. The child agreed, and Leftwich picked her up and helped scan the items. The video of the incident went viral, and Mary-Ann and Fatimah have stayed in touch. Fatimah has since been transferred to a Dollar Tree closer to her home.