Thank you for your insight. The last thing I want to do is make things worse, I hope he sees it in a similar way to you.
I changed some details after writing to keep anonymous (a bit ott, I know) I forgot to change the last bit though hence why I mention mother then father
I do not think you are belittling a death if you express concern for your friend's emotional state right now. Agreeing that it was a comfort of sorts is not like saying "gee, that is good news." Stay within the language your friend uses and you should be OK. Except get it straight whether it's his Mum or his father, that might bother him.