Well, actually, this is one of those fears that is kind of justified. Who wouldn't be worried about that in that situation? What you have to do, is keep reassuring yourself. For one, even in a small town, the likelihood isn't that great that you'll run into her any time soon, and if you do, it won't be very often.
Also, remember that we always dream up far worse scenarios in our heads compared to the reality. So, what if you DID run into your sister? What's going to happen? You'll feel that quick surge of anxiety, feel a little shaky, and then it's over. It's not like the two of you are going to get into a fist fight (or at least I hope not!). She probably feels the exact same way, and will probably avoid the places she knows you go (as I'm sure you do the same). If you see her, you can just ignore her, and move on with the task at hand. If you feel uncomfortable, go to a different section of the store/building, or last resort, leave. In these situations, it's almost better to get the experience out of the way, so you stop fearing it. I think you'd be surprised at how much you've built this up in your mind.
Lastly, I'm not sure what the falling out was about (and you don't have to share), but life is awfully short to lose contact with people who are important in our lives, let alone our family. Maybe it's time to extemd an olive branch and try to repair your relationship? That would be a win-win for you, because, you get your sister back, you can feel at peace that you're no longer fueding, and you don't have to worry any longer about bumping into her somewhere. Just something to think about.
Best of luck! Read More At : ...