amazing. pretty or not first?

She appeared visibly shaken and insisted that her manager needed to be informed. When we explained the situation to her manager, he sternly reminded her that she was not supposed to take cash from the till. He told her she would have to repay the missing amount by the end of the day. She replied that she would need to ask her aunt for help. The manager also warned her that if she failed to return the money, the matter would be escalated to upper management.

asked chatgpt to rephrase this part as it is quite confusing. not sure what is "till".