you were friends with this girl and she and your sis had a tit-for-tat, no fault of your sis, naturally you side with your sis. You did not end the friendship however, you later found out that the other woman later trashed both you and your sis elsewhere and to others, naturally you confront her about it, and that's when you ended the friendship. years go by without so much of a word to eachother even when seen in public, then one day you find out one your best friend is still friends with her.
What do you do?
