I was very disappointed when the winter wyvern died in Dragon's Blood book 2. She was by far the best character so far!
Then I remembered:
Oh yeah! She's an eldwyrm! She only died physically! Her soul should still exist somewhere! There's hope! (assuming the writers are smart about it. Thankfully that happens so very frequently in so very many shows... cough.)
Now if we could just go back and save Marcy (especially since they never fully explained her powers).