There are two currently on ebay. A loose one missing her coat but with other accessories, sold for $15. There is a MOC one out of Italy for $70.
Since you are in the US, shipping for American collectors will be better, so I would say around the same price as the one on ebay.
If it were mine, I would put it up on ebay with a starting bid of $65 and see what happens. If you need a fast sale and emergency cash, I'd put it up for $50.