I keep seeing this and keep thinking someone else will mention it somewhere.
Using the mythic spell book to bring a girl to level 350. Next we want to awaken the girl to move to level 400 and we see:
So yay, we have enough gems and click the button. In this case it says we need 160 gems which we have yet instead of being allowed to proceed we still see the awaken button.
Clicking on the button a SECOND time we find:
Notice the cost to awaken the girl has doubled so Boo, now we have to wait and get more gems before we can do what the first screen said we could do before. Why the first screen? If we don't have the gems the game should say so instead of having two screens which tell different stories.