If you can't or don't want to cut off contacts with your Sister, then it'd be good to at least severely reduce them. Unfortunately that means that you will see your Nephews less often but I'm afraid that's the best compromise you can make. I am so sorry you're feeling hurt. No wonder you'd feel that way. Family members are the closest people to us so it hurts REALLY BADLY when they cut us off without apparent reason. Try to manage and to do your best by yourself. You are strong and indipendent. You can make it. Still, I deeply understand your pain! Keep writing and venting here if it helps. Sending many safe, warm hugs to BOTH you, @StreetcarBlanche, your Family, your Mother, your Friends and ALL of your Loved Ones! Keep fighting and keep rocking NO MATTER WHAT HAPPENS, OK?!