I posted the review under her account and did the same checks for my account. It never showed up.
I do not know why it didn't show up, but I wouldn't be surprised if the business had been able to pay money to Google to be able to check reviews before they went live and mark them as spam.
Edit: Because some commenters did not seem to get the implied message, what I am actually implying is that in this context, or any context, I don't trust Google. I have no evidence of what commenters said I have claimed. (I have not claimed anything; I just said I wouldn't be surprised.)