You're expecting too much.
This about it from her perspective :
you could be trying to get your jollies for free
You could be looking to out her to friends and family, or blackmail
If she has a pg then maybe that's going to be your best chance of seeing the goods beforehand, which I believe most users on this site that want that, do.
Personally I would love sp to give a full picture of what they look like, before you spend any money, after all you wouldn't buy a car without at least checking it over, but they generally don't so you just have to accept it.
You can always walk when you get there if she isn't what you want.
Edited to say she has pretty clear pics up of what her body looks like. Some give even less than that on their profiles.
It's not a dating site, so maybe don't focus on the face so much.