Quick update. My friend replied to my letter. She made no mention of the convention talk. Did say she was still happy to be friends even though we had different beliefs and she respected my feelings.
Which I thought was nice until she seemed to reference the shunning and said she was sorry for what had happened to me which shouldn't have and that we will have to leave those individuals in God's hands. Those individuals, my family, are doing what the cult tells them to do. Seems to be saying they are doing it from choice! Nothing to do with their religion, and hers. Frustrated and as always when we come up against cult reasoning, it's depressing.