Life can be so cruel. Folk like my mother, a shadow of her former self with fairly advanced dementia, are able to cling to life indefinitely with an increasingly lousy quality of life. While others lose the fight for life when they have so much more to experience, give, and share.
I can offer no comfort to you or any others out there suffering at the moment, but I couldn't read your post without contributing something. Take care of yourself; it's the last thing you'll feel like doing at the moment, but it's what Edith would want.