If He does not know, there cannot be a God." She was watching his face, half wofully, half stubbornly, as if, whatever might be the issue of those words, she had to say them.

She saw how pained he was.

To admit the possible non-existence of a God when you can so easily leave the subject alone was horrible to Tommy.
"I don't doubt Him," she continued.

"I have believed in Him ever since the time when I was such a lonely child that I did not know His name.
I shall always believe in Him so long as He does not take you from me.
But if He does, then I shall not believe in Him any more.

It may be wrong, but that is what I feel.
"It makes you care less for me!" she cried in anguish.
"No, no, dear." "I don't think it makes God care less for me," she said, very seriously.