OP, you've been a member here for two years, hopefully you've read a bit and got a general feel for what's what on the London scene. If not, then I strongly recommend that you read the Punting Wiki (links at the bottom of every UKP page). Especially 'Punting Introduction' - it's been compiled by several seasoned punters and covers every aspect of the hobby.
As for this particular girl, just bear in mind that they images are heavily Photoshopped. And being Romanian may involve a significantly reduced service. Read her Enjoys list very carefully and compare against others'.
As above, you'll have a better time selecting one of the positively reviewed WGs. Take your time finding one that meets with your expectations. Decide what those expectations are. Be polite, clean and have the correct money ready - boom. Enjoy