Hello & Welcome, Headintheclouds6!
I was going to reply by quoting excerpts from your post, but I found myself selecting everything you wrote. Wow. How well spoken! Clearly, you're in the right place.
Alienation, distraction, consumed by the illness, feelings of failure and being a burden, etc., etc. - you've summarized a whole bunch of the posts in these forums. You're resonating!
Make yourself at home.
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My dog

mastered the "fetch" command. He would communicate he wanted something, and I would fetch it.