She suspiciously paid for everything in cash for years, then people realized why
Her Final Chance
Not a lot people make that much money in just one year, and Anna was no exception to this norm. When her personal trainer found what her secret was, it was the last chance she wanted to give to Anna.
As soon as this happened, it clicked in her head that she truly had no idea who Anna really was. It was immediately clear as day that Anna Delvey was a sneaky con artist.