Rose feels like, She was sitting on needles, Although Alia and her are supposed sisters but because of that she knew her sister's personality very well.
Alia is very possessive of her things. When they were in kindergarten, She broke her classmate's head with a chair just because that classmate sat on her chair, When she was absent from class the previous day.
Also in high school, There used to be a man who tried to woo her and even confessed his love to her but she rejected him. Later when he found another girlfriend, Both he and that woman disappeared.
Even she as her sister doesn't know what happened to those two.
