>>718387180
She went through the trials on 4
>>718387221
It's clear he just wants her to be his heir, but anyone that read the book does find the situation incredibly odd and weird how no one comments on it.
Originally Fake Ciri was supposed to show up, she was Cerys (and you can see how she resembles her) who kept her identity a secret.
I wonder how that plot would've gone because she's married and happy with Emhyr at the end of the books