Message her and let her know that you're not happy and you feel as though you've been misled.

Request a partial refund or full refund (but this probably will make it not worthwhile since you would probably have to pay for return postage and most sellers would not be prepared to re-imburse that cost to you).

If all else fails, file a Paypal claim as item not as described and they will investigate and refund your money if they find it is in your favour.

If you paid by other means, then you're kinda screwed on that part and will basically have to plead with the seller to issue you a (partial) refund.

Worse comes to worse, you can threaten to leave negative feedback and not fear her doing likewise for you (as sellers are no longer able to give neg feedback to buyers)

Just my 2c worth.... hope it helps