Welcome Really? ... Nice to have you here.
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Time has a way of letting us see the obvious ...
25 yrs ago, as I chatted with a 'brother', asking about his
children, ..his daughter was praised, but the son had
left the organization and he said , "we don't talk about him"
Even then, I could feel that weird numb blocking-out of reality,
and just shrugged & stopped my thoughts!
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Hopefully, your Mother will 'get it' soon.
Maybe make a small quiet comment ...and then just stretch it
out a bit more ...just to get her thinking on it.
all the best
clarity
....