I am sorry! Does her site still seem open, I mean like she is not on vacay or anything?
I cant think of anything else you can do if she isnt responding to your emails except maybe try one more time and tell her that if you dont hear back you have not other recourse but to leave negative feedback for her.
Do you have your bank account set up to your paypal -- if you set it up like that you can just transfer funds there instead of writing a check or getting a mo. Even though it takes a few days, but no longer than sending a mo by mail.
Hope she gets back to you!