Little wary because a well known lady has a lot in common with someone I know.  She'd remember my name and I didn't want that to get around.  
   
 I shouldn't sweat it. It might not even be the same person.  OTOH, there aren't that many ladies in her age range who are THAT hot. and the way that she writes, dresses and talks about people, and things that she said about herself in different places made it seem just likely enough that I'm not sure.  
   
 Would this be in-bounds:  I don't need to know it if she is that person, and I'd rather find out that she isn't.  She looks like fun.  What about sending a brief email explaining that I had the concern, and asking if she would kindly answer a question that would probably rule it out, but still not be very identifying.  I was thinkng of something like "Did you live in [a large TC suburb]?"  If she said no, then I could even go ahead and schedule with her, and if she said yes, it would just mean that she *could* still be that person, but not do much to change the odds that she *is*.  
   
 Would that be an OK way to rule it out and still protect her identity?  
   
 PMs are OK.