This buyer apparently has at least two IDs on etsy, megayang and couthsun
Related email addresses :

couthsun@hotmail.com (email for megayang)
couthsun@gmail.com (email for couthsun)
156042944@qq.com (paypal id for both emails)

Purchased some items from my etsy store for a year or so before she started to allege that her "partner" in China found "defects" in the shipments, promising to return them but did not.

Then she stopped responding after a while. Do not recommend.