Aight I see where your going with this. But, I did suspect it was a hickey; I was just assuming the possibility it might be something else. And the idea that she’s jealous is very convincing, I’ll give you that; but their is still the possibility of a darker part to it. Ever since her mom dead, her older sister was her role model. The one who took care of her. She was more of a big sister is a sense. And, maybe the whole fact that some other girl came in to take her original spot. After seeing the whole kissing incident, she might’ve had mixed emotions. She did say that this could destroy the family, so she might fear loosing a family member again; which can be proven by what she says in page 12. Maybe she even feels that she was not loved enough after seeing that, which could stem from what you where talking about her being jealous. But, the one factor that I can not get rid of is the last thing she says. She says stuff like, foolish, dirty, and it makes me sick. And even her closing statement, “Her kindness is a form of cruelty.” I think there are 4 possibilities. One, she is jealous. Two, she might’ve been threw something similar before. Three, both the jealousy and experience. And lastly, she just might find this relationship in a different point of view. She might see this as a problem. The possibility that this could break the family that’s been re-built. She might not even want to lose it again, which is why she wants to fix her sister. Neither of us can tell for sure, but I think it all comes down to her either being jealous or her finding this to be a certain problem in some way.