I don't travel so I can't really speak on this but...
I can see adjusting rates to match a certain market rate or even to offset a flight/hotel rooms. What if the girl plays at home, at a private residence, so her costs aren't normally that large? A nice hotel is at least $120+ a day. What if she only likes to see 1, 2, 3 people? Too many variables to speculate.
The best thing to do in my humble opinion is just move along to another in your range. If the girl doesn't get any bookings, she'll adjust them or won't come back again to visit. There are plenty of others to fill her space.