I did add this to the end of a similar thread but thought I should start my own...
I sold some baby clothes for 99p (one item has slight stains as described and photographed). Buyer has sent me a message saying they're rubbish (another item barely used) and has asked for money back - on a 99p item (£3 postage). No case open as yet but I don't want to end up paying for a return when the original postage was 3 times the cost of the item...
Do I not respond and see if she opens a case?
Ask for more information and photos about what she's unhappy with?
Just refund and be glad I've only lost the original postage cost?