Responses
She runs away after a bit and the ML tries to find her, he gains his eyesight through a transplant from his friend and he goes to a village and recognizes the FL sister. He initially thinks the FL sister is the FL(since fl described herself using the sisyers appearance), but quickly realizes it isn't her. He eventually finds out who FL is because he overhears her reading a book to someone in the same tone that she used to read to him. He now knows that the FL was the most beautiful soul and person through his friends eyes, and his eyes too.
The author better not make a cliche plot twist where she describe her sister appearance rather than her own