Hmm... Sometimes nothing will completely remedy the situation, no matter how many lock-ins or extensive conversations you have. Some people are just plain stubborn, and it's something everybody has to deal with. No, there's no guarantee that you will necessarily be bestfriendsforever with all your line sisters, but the important thing to remember is that they are your *sisters*. For that reason you have to treat it like you would that blood family member you can't seem to get along with - be cordial, be civil, and try to stay away from confrontations or arguments that may disrupt the rest of the family. It's just my personal opinion that no matter how much it may seem like a personal failure, sometimes you just have to let things go.