What to do/say/think/pray...

I saw 3 year old Abdul again today.
I felt a bit rushed seeing him at the end of a long clinic day yesterday so had him come back today.
Unfortunately he has a chronic, probably lethal condition.
He was diagnosed with a type of cancer of his eye over a year ago.
It was only months ago that he came to our clinic.
We managed to help get him to an eye doctor to remove his right eye; probably too late.
Last month he started getting strange swellings on his skull.
In the past month these have increased a lot.
Unfortunately his appointment for a biopsy fell through.
I have nothing left to offer him.
No means for a diagnosis.
No means for treatment.
Even in the West this looks like it would be difficult to treat.
If this is what I think it is, the cancer has spread too much.
He has lost 2 kg, is anemic and weak.
The only good thing is that his mother is doing her best to care for him.
He is receiving the love and comfort he desperately needs.
What more can I do for him is what I wonder now?
How can I support this family in their time of need?
I know we need to trust God in this.
But it's hard to know how to pray.
Pray for healing?
For God's will to be done?
It's hard to pray these prayers when so often people are not healed.
All I can do is keep bringing this back to God.
Ultimately, He is in control.
That's all I can hang on to.