Stepmom Stresses - Did they cause child's disabilities?

Being a stepmom, and having children with the father of the stepchildren, brings with it its own trials and stresses because the ex can get a little ballistic over their ex moving on, jealous, insecure, etc. over another child entering the picture (not to mention mad that it can decrease their child support). Here is a short story about what a stepmom can go through, not at the ex's hands (though she did nothing about it) but at the hands of a family member of hers. It's Jerry Springer material!