I agree that the name Pern is Ann's. So that would have to be removed from any of your work. How about Dragon Masters, Dragon Wardens... etc. You could come up with a large number of other ideas to still be able to utilize your hard work. Hate to see someone go through all that trouble to create this stuff, to be shot down by some uptight lawyer types. Change enough of it.. and then well, it's no longer derived from her works.

The doctor says I have way too much blood in my caffeine system.