She's probably paid hourly and not allowed to work overtime because of corporate policy. Don't get me wrong. It would still piss me off if I was in your shoes but might be the casino's fault moreso than hers.
that is my point, corp dont care about you or your tickets or your business. what they do care about is bottom line and paying ot, for multiple people which probable involves multiple approvals isnt possible. likely would also take a system override or change to even get the machines turned on after close, in order to cash a ticket.