No you couldn't have done anything. Because mankind has to live with the fact that we'll die and everyone we love will die.

Whatever we do "right" cannot change that. One of my favorite sayings is "Relax- nothing is under control." Nature isn't- look at the floods and the fires.

I am sure Ingrid appreciated her life with you just as you did the other way round. That's happiness. And it only lasts a moment of eternity.