I assume in your anecdote (of almost zero worth) that your mum confirmed this dead brother? Strange family that you would grow up not knowing that.... Note also that just because she didn't tell you, does not mean others would not know - it would be a difficult thing to keep secret. May even be in newspaper accounts of the time. Your lack of knowledge (albeit surprising) does not mean that others in that church did not know, especially if there were people there who were around at the time of the event. It does not require your mother to be a member of the church for a member of the church to know something about your mother. Also, do you know how many people were killed in the war - it's a pretty safe thing to throw out a prediction about and we know from recorded sessions how much the subject will then later ascribe definite knowledge and accuracy to what a review of the recording shows was nothing of the sort eg 'I see a relative lost in tragic circumstances' becomes 'Mum, have we lost a family member in tragic circumstances?'. 'Yes you had a brother who died in the war.' 'Amazing, the medium knew I had a brother who died in the war'. The subject will then usually be completely convinced that's exactly what the medium said and look very puzzled when the actual recording does not show that.
Do you know how many people get a feeling they've won the lottery...and then forget it when they haven't, rinse and repeat until you get a hit and then 'It's amazing, I had a feeling I'd won'?
