Why is this a tragedy? They have 2 beautiful, healthy children.

The girl has had her arm amputated and her ovaries removed, and she’s 4. “Healthy” is not the word I would use.

She was unhealthy before her arm and ovaries were removed. Now she is healthy, if partially disabled. We are fortunate to live in a time where arms and ovaries can be largely compensated for. By the time she is of child-bearing age, if she chooses, she might well have the option to undergo a semi-cloning procedure as part of in-vitro fertilization to create an embryo that contains a blend of her and her mate's chromosomes akin(ha!) to if she had functioning ovaries.

I believe that was in reference to the "first" discovered semi-identical twins, unless I misread the article.

But, it's rather unfortunate in either case.

I missed that. How terrible.

Still, having children is a miracle, not a tragedy, though tragedies may be involved.