My Mother's good friend has just come out at the age of 68, six months after her rather domineering Mum died (friend had been her Mum's carer for years). Apparently she said 'Oh, of course you and XXXX knew' although she'd never breathed a word.
Anyway, she's convinced that she'll never find anyone because she's left it too late. I think it would be very sad if that were the case - and if there are any social groups for the older lady who has just come out, I bet someone on MN can find them...