I was at the GSC where Mary Lou called in. Unfortunately she had very little to say about Super Pay Cards. She told an interesting story about her audition, where she says she saw lots of BEAUTIFUL women. Mary told us she never considered herself to be "beautiful", so she was surprised she got the job. She asked the producers why she got the nod, and from what I gather, they were more interested in a lady that would interact well with Art and the contestants, as opposed to being "eye candy".
She also said that the producers were giving her notes about her performance, because she was noticeably nervous at first and not even looking at the camera. She never had the "role" of a game show hostess, and her approach was to simply think of it as a role, which may be why she sort of comes across as not completely natural.
Beyond that, she spoke mostly about her career in theatre, and if anyone looks at the tape from GSC9, you'll see a LOT of VERY BORED GSCers.