Princess Rosalind is meant to fulfill a 600-year-old prophecy foretold by Merlin. As the 21st queen she will restore her family's good name and end a war. But there’s one little problem - her left ring finger is a dragon talon. To hide the secret, the Queen forces Rosiland to wear gloves at all times while she seeks a cure.

When a dragon carries off Rosiland everything she thought she knew falls apart. How is it that Rosiland carries dragon’s blood? And what other secrets have her mother kept from her all these years? Dragon’s Keep will keep you turning the pages to the very end.

I think you mean "Dragon's Keep" in your link. Your link leads to the right book but you mistyped the title. Dragon's Blood is an entirely different book by Jane Yolen. But thanks for the awesome summary. Sounds like a really cool book! :)