use Tin Eye.  Use Google image search.

Her pictures are used in Europe.

http://escortplius.com/escort/8560/SoniaYR-Escort-from-Russian%20Federation.html

Her phone has zero history, and her ad is a cookie cutter copy of other fake ads (check the wording):

http://www.eros-ny.com/files/354215.htm

Can I say to a certainty that its B&S? No. But would I take the risk from what I can see? No way. Not with the info in hand.

Cheers,

Miss Marple