First of all, let me say that I am sorry this happened to you--it is never fun to deal with a difficult seller. They ruin it for the rest of us honest sellers, those of us who care about our buyers and our reputations.
Secondly--do not worry about a thing. It does not matter how long she takes to accept the return, you are more than covered by eBay in this situation. One thing that eBay has done for buyers here, is put into place strict rules about returns. You WILL get your money back--so don't worry about that.
Although what struck me the most about your post, and the real reason I am writing this response--is the complete unprofessionalism and rudeness your seller is demonstrating. By taking her time and waiting to accept the return, and by refusing to cooperate, or admit any wrongdoing, they are acting very unprofessionally. However, telling you that they are not going to pay for the shipping back, is downright rude--and also could not be further from the truth. They have NO power or authority to deduct any money from your refund (again--eBay has rules about this), and by telling you that they do--they are either woefully misinformed, or they are just a ridiculous jerk.
I get the feeling that you are a very nice person--and your seller is using slimy intimidation techniques to intimidate and essentially harrass you. It isn't fair and it isn't right. I advise you to show your displeasure with negative feedback. The seller CANNOT leave a negative for you in return--nor can they leave a positive with negative wording--you can easily have anything they leave in your feedback removed by eBay. AND they will be advised by eBay that leaving such feedback for buyers is prohibited. Leave something like this: "Dolls were in very poor condition--not as described" or "Seller lacks professionalism and courtesy--very bad experience."
I take offense to sellers who act like yours is--and I feel strongly that they need to be weeded out--we have enough issues here without bad sellers running off good buyers. You did nothing wrong here--you absolutely should not be forced to keep a doll with a split head--furthermore, you shouldn't even be asked to accept (no matter if it is cheap) a doll with a chewed up hand. To not include those defects in the description or to disclose them when you asked questions--before you purchased your items is completely negligent on the seller's part. IF you start to feel bad about it, I advise you to ask yourself this, "If you were the seller here, would you have sent those dolls, in that condition to a buyer? Would you have failed to disclose the flaws? And when called to task for misrepresenting your items, would you have then been difficult and rude" I think not.
