Man... she woke up after 20 years... she was unconscious since she was born... how did they feed her? I mean, you can make babies drink from their bottle even while they sleep, so I guess they could have done that, but she never walked, she never talk, she never did anything of the things she is doing. Sure, you can say, "Well, the god just gave her the knowledge," but that's just sloppy. If she was unconscious since the day she was born, how does she know about the concept of siblings? How does she know the language? How can she speak it? How does she know how to walk, when she never has done it before? How can she walk, when she lay down on a bed (?) for 20 years? She shouldn't have any muscles to keep her standing and the setting is medieval, which means they don't know that not moving a person who has stayed in bed for a long time every once in a while is actually quite damaging.
TLDR: A normal human would be crippled after 20 years of being on a bed and would have no knowledge at all. I guess the author just wants the readers to believe, "It's god's power," but that is so goddamn sloppy.