I live in Budapest, Hungary and do occasionally sell ponies on a local auction site, and thus have met a few local pony collectors, but unfortunately not yet this lady. I did a search for her nickname on a few local sites in hope of finding a feedback profile somewhere else, but no results came up for this nick.
I wish I could help you more :/ and I do hope that despite her lack of feedback she does turn out to be a reasonable buyer (you have already had your fair share of bad buyers recently, no more is needed...). as a fellow Hungarian who was also new to international eBaying once I do know how confusing it can be, yet also relieving, considering your collecting ways suddenly become pretty vast. and in recent days I also highly appreciate anyone who is willing to offer international shipping