Hi Wayne, do you have copies of the messages she sent agreeing to go with the majority vote? If so, and they were all done through eBay message system, then do give eBay permission to look at your messages from the seller to verify that she agreed to go with the majority vote.
If eBay insist you return the vase in order to get a refund, do agree to do so, but only on the understanding that the seller pays the return postage as it was her mistake.
Don't post it until you get agreement on that.
This is the only way that we will get eBay to realise that it is unfair for the buyer to have to pay return postage on items misdescribed........I'm sure you know all that, but still felt it was worth mentioning it.
Good luck Wayne....so far, I have never lost an eBay claim..... :X: