I haven't worried much about this really....I guess I feel that we're giving her a wonderful gift in a sibling, not taking something away from her. I am very close to my brother and I can't imagine being an only child and I want the same for my kids. It doesn't mean I will love her any less, or that she'll be deprived of attention. She won't be the whole focus of my life like she is now but I think that's a good thing for both of us. But she'll always have someone to play with, and as they get older they will each have at least one other person who understands what it's like to come from the family they do, even if they don't turn out to be close. When we are gone they won't be alone in the world. We feel that's the greatest gift we can give her