Our prayers are with you and yours.
My wife and I have just (June 18 or so) begun cancer treatment at CTCA for her breast cancer. I can only imagine what two years must be like. Always remember, there is no trouble larger than the Creator of Heaven and Earth and he has promised to never leave us or forsake us. Our God is faithful.
When I was having trouble coping and began to question "why", a friend and brother in Christ told me, "Iron ore is just a useless rock until it passes through the fires of a forge."
Keep your focus on Christ.
Colossians 3:2
Set your minds on things that are above, not on things that are on earth.