just got down to lvl 15 and found the adra dragon.reading some other topics and found out this was kinda hodge podged together and wasnt part of the original story. all fine.
i would add (unless i missed something) you should be able to persuade the adra dragon to fight with you in the Battle of Yenwood.
if i missed something feel free to leave me a cryptic message to that affect...
loving the game... cant wait for poe2