We finally got the results of Charlie's autopsy, so now we know why he died.
He had deep leg vein thrombosis which caused a blood clot. I thought mom said that it caused a heart attack, but when I looked it up on the internet I read that the clot will move to the lungs.
"These clots are dangerous because they can break loose, travel through the bloodstream to the lungs, and block blood flow in the lungs (pulmonary embolism)."
We were told that it was a painless death. Thank God.