I am reluctant to jump in here, but I have seen Dolly a few times in the past couple of years and she has been nothing but warm, professional, FAF and a really fucking good shag!
Blackmail is many peoples worse nightmare, it is really serious but it was a long time ago and she has had many positive, unproblematic, reviews since then so yes be cautious, using a punting number, pay cash only, but personally from experience, I think those days are far behind her.