Responses
let me show you what i think. i honestly see her as someone who really cares for her brother, the reason why she has these 'dark' moments are because she pissed off over the fact that both her boyfriend and brother are keeping secrets from her.
i seriously hope the story doesn't turn her into some kind of possessive girlfriend who tries to kill her brother, it would be a shame if this story would follow such a dull cliche.
i really like the sister, she seems sweet, i really hope things turn for the better for all of them.