returned package

Hello all,
I have just had a package of 3 items sold returned to me by Australia post. The buyer's address was a kiosk at a shopping Centre. The address/name was written correctly. The note by Australia post stated that no-one known by that name at kiosk.Upon receiving the return to sender package, I asked the seller if they had an alternate address and she has requested that I send the package to the same address again. She has also stated that I must pay for the re posting as it is 'not my fault'. given that the address is a very insecure one (with employees that cannot sign tracked item for buyer) I am unwilling to send it to that place again. Also I am reluctant to pay postage again as they are substantial-she bought a few items and I have done nothing wrong with the first sending. Any advice re how to handle this/ebay policies in this situation? many thanks