Go here to find out why she was blocked;
http://offer.ebay.ca/ws/eBayISAPI.dll?BuyerRequirementsActivityLog
You find it by going to your preferences, then clicking on "Show" for "Buyer requirements" - there's a separate link to show the activity log.
That should tell you why she got blocked. You can put her on your exemption list to bypass the blocks, of course.
Imagination will often carry us to worlds that never were. But without it we go nowhere. Carl Sagan