what a load of bs... 120 for an hour and shes only been doing it a few weeks? 
But that's the thing, there are plenty of WGs charging the same rate, so all she has to do is mooch at their profiles and come up with a similar figure. It's not that hard to fathom. She's hardly going to think "I reckon I'd be a decent prossie, let's start at fifty quid" more likely to put herself on the market for the going rate. Especially if she is indeed new blood.
This is, of course, all assuming she's real haha.