I sold some Lelli Kelly boots on ebay on behalf of my sister, they had sequins on the side. My niece wore them a max of 3 times. They sold a week ago and they were delivered last week. She didn't leave any feedback but tonight sent me a message saying that they boots were too tight on her daughter and the zip has come a bit off from where she has tried to zip them off. I'm sure that they can't have shrunk at all because the sequins looked perfect and they hadn't buckled or anything, plus I thought the quality of Lelli Kelly's were high. Anyone have any idea what I should do, how to respond?