I am so angry with my son

I know there is nothing I can do. But I still get angry with my son. He is an adult almost 50 years old!

He married and had two children. When they were 6 and 8 his wife had an affair which ended the marriage. She was a controller and he was passive.

We pulled together as a family and helped him create a new home where his children came for their time with him. Everything worked beautifully. The children were thriving.

Then along comes a new woman who persuaded him to sell his house and buy one with her. Another controller!! She has two teenage daughters.

Over the last three years they have lived together, we see his own children being edged out.

It’s all about the new partner and her children. She is a wanted. He spends all his money trying to please her. Holidays, cars, etc.

My granddaughter has told me she does not like going there. She says she doesn’t think her dad is happy and is trying to convince himself he is. She says the new partner ignores her and her brother. She says the new partner says mean things to her when her dad is not there.

My son no longer takes his children on holiday but goes on holiday with the new partner and her girls.

My husband and I have also been sidelined. My son has changed. He is very critical of us.

My heart is breaking for my grandchildren.

I want to tell my son he is being manipulated and is letting his children down.

I think he is scared of the new partner and can’t stand up to her.

I know I should not interfere, but I am struggling to know what to do.