Having grown up the younger sister to an older alcoholic sister, I can understand what Brandi was trying to get at. Kyle's relationship to Kim has been shaped by Kim's alcoholism and everything that goes down between them is colored by that dependency. Kyle doesn't know how to be a sister to a sister that is completely sober. It is a HUGE adjustment to learn how to relate to a family member, especially one you're close to, who is no longer using their drug of choice. It takes a long time and yes, at times you wish things were as they used to be because you knew those rules. Obviously, Brandi was wrong (once again) to say it, but I would be willing to wager Kyle has felt that way even though she won't admit it!