First all the best for your father and I hope, he has the possibilty to hear your song!
Well, your song is really an interesting combination of different sounds. But for me they harmonize in their own way. It is really an unusual good creation! I can find nearly every emotion in your song, which express your intention for this song - sorrow, fear, uncertainty and of course hope! So be grateful, that you are able to express your emotions through your own music because it will helps you a little bit for your situation. I know what I'm talking about, because I create also a song for my father, when I was in a similar situation!
Well vitek...tata...4 shiny stars for your creativity!