Hey Kim, I certainly sympathise with your position- what on earth do you say? Unfortunately, in my experience, there's nothing you can say.
My husband was diagnosed with non-Hodgkin's lymphoma 18 months ago. I found the best thing, when he got upset, was just to silently hold him. I think in those situations people aren't actually looking for answers, but just to know they're not alone while they process these huge emotions. Even if you just sit with your Dad and hold his hand, that will be hugely valuable and comforting for him.
A carer/supporter's role is not to have all the answers, or make the person they're caring for feel better. Even though that's what we want to do! What we can do is just be there for them, and let them know they are loved.
On a practical note, do you think joining a forum like this, or some other interactive medium, would be helpful for your Dad when he can't sleep? The Cancer Council Hotline is open 24/7, and this website is always accessible. If your Dad does start to worry, he has the option of connecting with other people in similar situations, or trained counsellors.
I hope this has been somewhat helpful. Take care of yourself, as well. love Emily
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