How do you leave someone behind????

"A 13-year-old girl is missing after she was "accidentally left behind" at a Home Depot store in Northern Virginia, Fredericksburg police said.
Sarina Niculescu was accidentally left behind at a Home Depot somewhere along the I-95 corridor, police said. She was wearing a pink shirt with butterflies and a long black skirt."

https://www.msn.com/en-us/news..../us/13-year-old-virg