My Friend's mom is dying of cancer.

Reach That Far by Eleventy Seven

Don't leave me now
my memories are more than I can take tonight
And God show me how I'm supposed to trust in things beyond
my sight so teach me how to kneel
When I don't know how to feel
And show me where You are
When my faith can't reach that far.

And tell me there is more
To this life than only what my heart can see
Take all these fears Make them into more than
who I used to be
Is my soul to blind to see
The truth You have for me
Cause this peace I feel inside is too weak to survive

My heart has left me alone again
Is this the beginning? Is this the end?
Is this the time you'll never let me in again?

My friend is going to be 16 years old. He's got two younger sisters, and an awesome stepdad. His mom has only days left now before she dies.

What am I supposed to do?