Please think about sending her family a note. I would think that for YOU being able to tell her family what you have shared with us might do you a lot of good.
DH and I found someone on the side of the road one time who was in the process of passing - he was crumpled under a pile of lumber after having a heart attack - we did CPR but he was gone by the time the ambulance arrived. Anyway, I sent his family flowers and a note, and they later called me with some questions. It gave them a sense of closure to know what happened at the end. And it helped me a lot because there IS a sense of grief there for those that we can't save.