Let's not over analyse.
If she wants to do massages and HE then let her do it. I suspect there's a lot more to doing it than she thinks like random blokes of all shapes, sizes, level of cleanliness and attitude turn up and you have to be prepared to give them a good service. That must be hard to do.
You also have to be prepared for the time wasters, people turning up late/early, address collectors, robbers, violent people, boundary pushers and general nutters. That's probably quite a hard part of the job.