Didn't?
Ryu thought that Ailsa might have just been saying things previously, maybe she was just joking around. But, with their minds practically being one, he was instantly able to throw this thought out. Not only was she serious, she was maybe the most serious Ryu had ever seen her be. In fact, she seemed to know that this was a fact.
"… What's going on, Ailsa?"
Ailsa looked up toward Ryu.
"After the seal on my soul was undone, I'm a lot more sensitive to things. What used to be just a few guesses to me seem far more obvious now to the point I feel stupid for not guessing them to be true long ago."
Ryu's brow furrowed.
"I don't know about the details, but what I am certain of is that the process of your birth was most definitely tampered with. The result was your poor soul talent. And, as though that wasn't enough for them, they made certain that your Spiritual Foundation would be a False one.