Hi Kat,
I was diagnosed with brain cancer 18 months ago, yes times are tough as we journey up & down the rollercoaster, depression can be hard and I understand just how your dad feels although Im coping alot better now than when first DX. I used to push everyone away and carried so much anger, but we are all indivduals and cope in different ways, maybe the drinking is his only solitude of copeing. Sorry about your dad, I know its so hard for your family.
regards Warrior woman