I understand completely Plaything....
No one should begin their journey in this arena playing guessing games. Some ladies build their reputations being honest, and delivering what they promise. I'm surprised that the men that have been screened by these type of women have not stepped forward and recommended someone they have not been burned by.
On that same token, not every lady seeks to start her career on the bottom rung, and working unsafely. Every woman, new or not, deserves to be able to screen. Unlike the lady in your original post, you'll know who has done her research or has had a mentor because she knows what to ask for. You'll know when women have a vision for themselves and her services.
A woman that respects herself respects you. Yeah, I left myself open for that one, but some women take pride in everything they do.
I wish you the best of luck in your endeavors!