I haven't been in the same situation, but I think you've been handling it the right way. Good for you for standing your ground and not being willing to compromise your choice of houses just to stay with your friend!! You're going to be a great asset to whichever sorority you choose!

Like I said, I think you have been handling your friend in a very mature manner, by telling her there's no guarantee that you will both get in the same house or even like the same house... and there's absolutely no reason you can't hang out together if you're in different sororities!! I guess my only advice would be to stick to your guns, and don't compromise what's going to be a huge step in your life! And I hate to say this, but if your friend turns out to not be mature enough to handle you choosing a different house than hers next fall....maybe she's not the greatest friend after all.