DD- I am very sorry to hear of your son's diagnosis. That must be a huge challenge.
I use word God as well. I have a Christian background. I also believe in only one creative life force so when people say "my HP" or "your HP" sets my teeth on edge. Plus I see those letters and think Hewlett Packard. Cant help myself.
I dont believe that God intervenes much or directs us at all. I believe in free will and its my job to be open to the experiences and people that come into my life so that I learn the lessons I am meant to learn.