How horrible would it be to have this be how you are remembered?
Well that depends. Are you looking to be remembered? Is it really important for every person in the world to be remembered by more than a handful of people? Obviously someone remembered Dolores if they actually wrote the above in your article.
Personally, I would not like to be forgotten. I would feel sad (if one can feel it after death) to know most people wouldn't remember me. But then I have my children and so long as they live and have children of their own, there is always a chance that someone will remember me, especially since we keep track of just about everyone one does now a days as oppose to the past where not everyone is lucky enough to find their ancestors. I don't know how lucky I could be to know where my roots are from exactly considering not much was recorded during the days of Christopher Colombus in Puerto Rico.