Hi thats not good at all, Ring PP and demand they have the item shipped back at once or no refund will be provided as per PP rules the buyer must send it back.

If you sent the item as per PP rules signiture when received, You should be covered buy PP.

It is really disturbing that people can be so dishonest, just isn`t right.

I would be ringing PP and demanding they do the right thing as you have followed there rules and should be covered for this.

You need to ring paypal not ebay and demand they have the item shipped back immediately before reinstating any funds. 

Also tell them that it is a fraudulant attempt at getting the item for free and that you do not intend refunding until your item has been returned. Also tell them that the woman will not engage in conversation about the matter.

Dailing that depending on the amount involved your only other options are the ombudsman or the police. Or you can send an email to the electronics crimes division to investigate it. I would also send an email to the buyer telling them that you are going to refer it to the police electronic crime squad as if she is being dishonest it may be enough to sway her mind to either send the item back or pay for it. Good luck and come tell us how u go.