That one is the Reborn Harp, she is sold out in AmiAmi, BBTS, Hobby Search and Ekia Hobbies (from most of us get their OE dollies), So your best bet is get her from Ebay
If you don't mind there is a Shadow Harp available in EH right now
http://www.ekiahobbies.com/oe-sh-3-original-effect-shadow-harp/There is also the original Harp, but that one uses the old body which as far as I known inferior to the Reborn body
http://www.ekiahobbies.com/oe-harp-original-effect-army-attractive-harp-bullseye/http://www.bigbadtoystore.com/bbts/product.aspx?product=ORE10002&mode=retail 