Just like Cam's "history" of stealing a laptop has to be mentioned in every piece about him, Auburn's "history" has to be mentioned too. This is why prior bad acts aren't admissible in court to prove the person acted in conformity with them in the instant case. Human nature is to believe that 'once bad, always bad'. or that one bad act is evidence of a flawed character.
And yeah, she's a fucking mommy part. How do you "vette a story out" and then admit you have no documentation? That doesn't even make any fucking sense. She basically says that since it's a cash business it gives plausible deniability, and that plausible deniability is evidence that it's all true.