Well done - beer brave is an awfully good thing! Only my opinion but: 1. I don't think you are obliged to consider your aunts and uncles in this, it is not their business. 2. I don't think your father needs to hear this at all but, 3. I think your brother has a right to know. One option is to wait until your father has died. The other is to swear your brother to secrecy - perhaps start by taking him to a pub and draw upon the circumstance to tell him what your mother said. Between the two of you, you need to decide whether to try and contact your sister, bearing in mind that she might feel rejected by your mother's sense of secrecy and shame. Not easy decisions at all and I wish you good luck. I expect there is some sort of organisation that would offer counselling and advice in this sort of situation - perhaps try looking online for such a thing. It seems Barnardos offers this service: making connections