Welcome Booklady, it must have been so hard to find out how you were conceived, to tell you in such a public place was a bad call, you needed to know but not like that. I suppose though your mom must have wanted a child so much to have gone through that to have you. Years ago people didn't show their feeling as they do now, perhaps her parents were cold with her and it was just learnt behaviour, everything is discussed now and more open. Why she said such cruel thing to you I can't understand. You have turned out a lovely mother and grandmother,cso shecdid something right. No one knows what went on in the past do I don't personally think anyone can judge, it's best to conscentrate on east you have than past hurts, which many of us have.
Kitty, you dont know what went on and if you can, do what the song says and let it go. It seems you have a whole family that you can get to know on and that must be so exciting. I know that many families where siblings don't get on, both raised by the same parents but do different their view on their upbringing. I would give anything to have just five minutes with my mom, I wish I had told her how much I loved her, but I didn', I hoped she knew.