Is iit possible that it is the infamous Ana of the lousy reviews?

If you mean Ana from Miami, or whatever her name is these days, I don't think so. I have seen her around in various places in South Beach and even thought it was at night Nina does not appear to be her in my opinion.  The link and picture says DC-Nina so DC reviews might help. If nothing there I would avoid. Looks to good to be true.

Did you even bother to do a search on her e-mail address or her name with "Exclude Bad Web Sites" set to "NO"?

Apologies. I thought that I did do a search on the email address. I must have mistyped it. As somebody who dislikes lazy research, I'm a bit pissed that I was caught doing exactly that.  Thanks for the info