Tell her this.
Do not forget you will die too one day. I am sorry I am gone, but Death is guaranteed the day we are born. It is a certainty that none of us like to think about. We like to pretend it is something in the far future that doesn't affect us. Live your life if the knowledge that you are going to die. Maybe a long time from now, but also maybe very soon. As you live your life everyday, do not forget that you will die. Perhaps it will make you more religious. Perhaps it will make you work harder. Perhaps it will make you not want to work at all. That is the point really.. you will realize your time on this Earth is limited and you will choose to spend that time wisely on the things that matter, instead of wasting it away on things that do not.
"Remembering that I'll be dead soon is the most important tool I've ever encountered to help me make the big choices in life. Because almost everything — all external expectations, all pride, all fear of embarrassment or failure - these things just fall away in the face of death, leaving only what is truly important. Remembering that you are going to die is the best way I know to avoid the trap of thinking you have something to lose. You are already naked. There is no reason not to follow your heart."
- Steve Jobs, Stanford 2005 Commencement address