I can't answer questions about the girls you've asked about (links would be helpful...) but I can tell you that Backpage, Craigslist, and Eros all have their share of fake ads. My suggestion would be to see a well reviewed girl for your initial run, you're more likely to get what you want if you know what a girl provides...

Hey there.....well here is one link.   It connects and leads to a website with same photos, and has the matching phone.   I did see eros ads earlier this year that she had a name of Kim.   Anyone know?

http://boston.backpage.com/TranssexualEscorts/tired-of-being-tricked-by-fakes-want-to-see-a-real-sexy-ts-with-real-picswell-im-here8ff-22/24474035

I called her at the number listed on the review (786 area code, http://www.theeroticreview.com/reviews/show.asp?id=209186)  and she said the pics were her but that she's not in Boston.  I sent her a link to the ad so shed know.  

Looks like a fake/impostor.  Bummer.