When Angela Peters—a woman with cerebral palsy—visited a nail salon inside a Walmart, she said employees turned her away. So Ebony Harris, a cashier at that same Walmart in Burton, Mich., set up a DIY manicure station and painted Angela's nails at a table during her break.

According to Tasia Smith, a bystander who shared what happened in a post on her Facebook page, while the nail salon refused to paint Angela's nails because "she moves too much," Ebony helped Angela pick out a color and was "so patient with her."

"I just…