I did not say I would not feel sorry for him if his four kids were not Sikh.
How about, "I hope Boris recovers, he has four kids and one on the way, who depend on him?" No ethnic handle attached.
My daughter has been with me since the age of eight and now in her late thirties. I married her mom who had her from a previous entanglement,her father has passed away..I do not use the word, "Step daughter" no need for a handle. If she were Indo, black, chinese, I would still just call her, my daughter... not my chinese daughter etc. Her children are my grandchildren and I love them just as my other grandaughter from my son who I am proud to say, I delivered on our bed 40years ago.