This is why it is deeply unwise to remain physically in but mentally out. Every day you remain is another day closer to you or your loved ones being drawn into the company of people doing nasty things and covering over what they do. As and when you find out all the details you will be expected to keep quiet and let the elders deal with it.
So its ministry group and they are all meeting at your house and who turns up? Brother or Sister Keep Quiet About What I've Done.