Since no one who answered actually understood...I'll ask again...?

Ok so my BFF is moving, maybe nearby maybe ridiculously and terribly far, we don't know yet. Lets call my BFF friend A. We have a mutual "friend" friend B, who's mother, as I just found out today because friend B told me, is the Realtor who is going to help friend A's family sell the house they live in now. She seemed happy about it, happy. How and why could she be happy? friends don't typically want friends to move and friends also wouldn't want the friends of friends to move... I took this as a betrayal. I'm a Christian and I know we are called to love, but how can I love her (friend B) now? I still have 2 weeks to deal with her after this till school's out