Yep,in her behaviour i can't see anything strange, bad or that can possibly harm the business either.
She just does like any freelance worker do, sets her rates as she wants and sticks with that. If you want
to hire her you pay her fee, otherwise you go hire someone else and no offence meant.
At best, she's her that can have some problems, as she can get less work, if sets her rates too high.
But then again, that's how it goes in any fields, i can't see why in porn it must be different...