That POS with the white border looks like Clover, Square, possibly MerchantOne. An incomplete transaction where the card had been inserted but interrupted just before finish, would be front-and-center on their transaction dashboard.
Beginning to think what is unspoken here, is that Shaniqua was trying to boost dinner with a bad card, otherwise they'd have her by now in a frogmarch headlock.
Note something else in that picture. The black co-worker woman on the right is sitting there with her hands crossed, doing nothing to help.
"A woman is facing charges after she allegedly slapped a Columbus restaurant manager over an issue with the credit card machine.According to the Columbus Division of Police, 28-year-old Bria'Janay K. Clinton was issued a summons for assault and disorderly conduct.
Surveillance video of the incident provided to 10TV shows the customer hitting Hickey on the side of the face with an open hand, knocking off her glasses and then turning to walk out the door."