I have 2 nephews, they belong to my brother, my brother is no contact with us and his children for many years due to addiction/jail but I still have a relationship with the children through my ex sister in law. Now the issue is she has since started a new relationship and has gained 2 step children and has created a blended family, however now when I have my 2 nephews for sleep overs or take them on holiday etc she feels I should be including her step children as they are one family now. Am I wrong to think that I don't need to include them as she isn't my blood family, my contact with her is purely as the children's aunt?? Not sure how to best handle the situation