I'm glad for all of you that he made the decision not to invite her. It's so sad when parents behave so selfishly, believing life to be all about them. No one wants to be turning their back on their own parent but it's important to recognise toxic behaviour for what it is and not accept it under any circumstances.

I find it so very touching how your sibling relationship is able to compensate for the missing mother-son relationship ❤️