I want to say how wonderful this story is and I hope good things for it thru completion. I understand how truly hard it is to write a book. It's a lot of work and planning.
I would like to suggest that when it's a werewolf storyline, there are basics that tend to be attributed to them. Within the lore of werewolves, they are half human and half wolf, this we all get. But having a fated mate is just as basic, it is at the core of the whole Moon Goddess' role in their lives. If you are going to change that, there needs to be more information given in the story about why this is lost knowledge and/or rare. You have all the right responses for two fated mates, but without a better description of what happened to fated mates being rare, there is no basis for this behavior. Also, Sera knows about it but Kael doesn't? Finally, the mate mark. It isn't normal for it to just appear when they meet each other. If it did, then it should also show up on Keal too at the same time.
The Moon Goddess power and Shadow power are awesome. I think this is really neat and a bit of a different take on werewolves. You could do a prequel chapter and give a story about this. Why it happened, what failed and a bit more on the backstory of the prophesy. You could also use this chapter to highlight the differences between your werewolf world and what is normally expected. Going differently than expected is always a nice change but it helps when folks know ahead of time.
Keep doin' whatcha doin'!! I'm following you and am excited to see you bloom as a writer!!!
