Is she talking about how Loblaws is essentially an organized crime outfit?

Yes this statement was quite frankly hilarious. I'm certain that the mafia has moved onto stealing bread for black-market redistribution. Or maybe they themselves can no longer afford to shop at Lowblaws.

"You can trust us to know this," she went on to say. "We're the criminals, after all!"

Nah, she's being truthful. The retail stores have illegally collaborated in secret to raise prices to criminal levels, which is a serious issue.