I don't know anything about egg binding, but whenever my fish get bloated, I feed them peas. If you have a bag of frozen peas, take one out, shell it, and thaw it. Then, cut it into little pieces to feed to your fish. Remember that a fish's stomach is the size of it's eye.
Oh, I just read over your post again. I didn't see that her scales are sticking up. If so, it may be dropsy

Once their scales are sticking up, it may be too late.. I've lost two fish to dropsy. Dropsy itself is not a disease, but a symptom of an underlying problem. I don't know much about it myself, someone else may be able to help you more.
Still, try the peas, and maybe do a
water change. What are your parameters?