My mum and I have had several bad patches over the years. All following tense discussions regarding her relationships with other people. I am now nearly 40 and contemplating whether our relationship just doesn't work and she would be happier with limited contact with me. I really don't want to make my mum feel bad about herself.But we have just had very different lives.I just fundamentally don't agree with her when she discusses her relationships. Two months ago we went out for dinner on a Saturday night, we were seated around large groups of families. She started a conversation saying she didn't understand why everything was so disjoined in our family. I was genuinely astounded by this remark and said it was because of the decisions she made. Her response was why does nobody ever consider what was done to her. My reply was everybody has the same frustrations as her, they just don't make the same decisions as she does. For example she stopped talking to her sister because she felt the relationship was to one sided, and the sister in law because she cancelled plans.I have the same frustrations with my aunts but would never end the relationship over it. My mother is very like my grandfather who was incredibly loved by me. But he was a character and also regularly fell out with people. I said to my mum that I just think she has a very similar way of thinking to her father. This infuriated her and she said she really doesn't understand why my grandmother did not leave him. My response was what would that have achieved? End of conversation was I think I know everything. Dinner bill was settled and her husband came to collect her early and we haven't seen each other since. We have text three weeks ago when she wished me happy birthday but nothing since. Previous disagreements have been about aunts, my father, my father's mother, her step children, her husband etc. I believe she feels I am never on her side. I feel I will not go through life criticising other people and won't be coerced into slagging people off especially loved family members. We have had agreements over the years about boundaries that I don't slag off her husband and she doesn't slag of my family but it just doesn't stick. I genuinely love my mum and we enjoy spending time with her when the boundary is respected. I wonder if my mum is purposely falling out with me to avoid spending time with me. She has a busy life, work, hobbies , close marriage. Just looking for any wisdom really from people who may have navigated something similar. Is it normal and to be expected, should we admit defeat and have more limited contact with each other, or do people adapt their principles to keep the peace with there parents?