Very much doubt she’d have received her marching orders there and then, that just doesn’t happen these days. Sackings are behind closed doors, and given that she’s not actually employed by Morton, it would be the security firm’s job to do that.
More likely the case that she got wide with someone who wasn’t prepared to put up with her shite and gave her as good back, resulting in the waterworks.
Cry me a river, you reap what you sow.