OP, this sounds terrible to deal with, and I truly feel for you because you're the kind of seller I'd love to buy this style of CL's from 'coz you're so informed about its fit, etc. - but hang in there as you will find the best solution for you - as I think the Ladies here have given some great advice/ideas/suggestions and they all make such sense.
And sorry if I missed it but: what is this
"individual's" *bay handle please (?) - would you please share that with us - so we can avoid her -Thanks so much. Also, work on trying to get her neg for you taken off based on how she's been treating you via her ebay messages, and do that by trying to get an *bay rep on the phone [phone for sure versus email] - when their 'lines' open up again. Hope you will get your rightful justice / fariness in this case.