Please give me an insight - my DF and DM had a very acrimonious divorce 20 years ago. I was in my 20s and had left home. My DF remarried. His wife is part of my family, an important part of my children's life but I would never describe her as my step-mother. Her DC are not my step-siblings in my view, although again I would consider them part of my extended family and they are close to my children. I feel strongly that, as an adult, I should be able to define my relationship with them. My DF disagrees and insists they are step-family and should be described as such. There is a huge back story of me seeing my DF as being selfish and not empathic. So I find it hard to know if I am kicking against his need to control by defining my own terms or if it is fine for me to do this. Thoughts?