I know what you are going through as I lost my father a few years ago to cancer. My family will be praying for yours. I know the next month will be hard but just remember the following:
John 14:1-4
Do not let your hearts be troubled. Trust in God; trust also in me. In my Father’s house are many rooms; if it were not so, I would have told you. I am going there to prepare a place for you. And if I go and prepare a place for you, I will come back and take you to be with me that you also may be where I am. You know the way to the place where I am going.