Rosse left cause he started to lose control of his sanity for some reasons to not hurt anyone. Ur sister loved him, once he left she k^lled herself after giving birth. A year later, while crying in the kitchen due to tiredness from raising ur deceased sister's child singly, shattered glass was heard from the room that the child was weeping. U ran towards the room & saw a familiar face, it was Rosse in a ripped straitjacket, rocking the child in his arms

"You have your mother's eyes"

he smiled.