Anonymous wrote:"Do they have other employees in the same or similar positions? If so what they are paying those they currently employ is going to be a factor as well."
If OP were a man, no one would say this to her. It wouldn't be a matter of "what's fair to others," it would be a matter of what revenue she can bring in or other value she brings. If she can do more than others, she should be paid more.
I am the poster you quoted and I would say this to a man or a woman. Most employers above a moderate size (250-500) have structured grades with salary ranges. They want to bring in employees as close to the midpoint of the range for the position as possible so there is room for raises. If she can do more than others then they might consider bringing her in for a higher level position which would then pay more buy that wasn't the question. If she is directly responsible for bringing in sales, clients etc. then that would be part of a commission plan which are again fairly standard within an organization of any size but it didn't sound like this was OPs scenario.