Thank you everyone who replied, the sincerity of your concerns for me humbles me,and shames my post, Admittedly I was depressed but I am not sure that depression excuses my pity party.
Just found out my younger brother is also in the process of being Dx'd. he has four kids each of whom has a fifty percent chance of getting the same disease.
That brings the number of nieces and nephews who face the same odds to eleven, add to that my son, and my faimly's little hold of this disease is certain to spred cadasil, from the four of us in my immediate family to six more who the odds say are certain to get it too.