life

Kilynns teachers neice passed away after being in an accident. There is a sub, and the kids know why.
This has led to *dying* questions again.

It's sooo hard for me to explain to Kiley about this. She says "yea, but that won't happen to me, or you" as her eyes well up and her voice cracks.
It's heartbreaking.

I don't want to lie and make promises that will be broken. I explain that it will happen to all of us someday. I something along the lines of....
"Yes, it will someday, but hopefully not until I'm much much older. We all pass away, it's part of life. But when we lose someone we love, we keep them forever in our hearts".

When I think back to how hard it is having an infant. I think it's even harder now having a older kid who has questions and whom I need to explain life too. Without traumatizing her and sending her to therapy later in life.
Am I going about all of this wrong?