Similarly Rey could say the same. She is already bonded with Nick over being saddled with comparable problems, but knowing that someone like Firo is in the same boat makes it all the more substantiating.

"Four years, give or take, since the memories were all unlocked. Before that, things were a little more difficult to figure out."

That was the point. Keeping her in the dark about who and what she really was only made most of her easier for Gregory to control.