I remember my father saying to one of my aunts after my mum's death with teary eyes, that he always thought he would go before her. When one partner goes, the one left behind is so often thrown into emotional truama as was the case of your mom. The way she was affected by your dad's death shows she cared deeply for him when he was alive. Taking care of the stray dog helped ease some of the burden. I hope she got better and better after that.
I truly enjoyed your story, you work is one of great talent.
I am moved by your words, because I agree with them. When a couple has lived so long, they become almost siblings, and death can also mean their death. Thank you for your comment, my friend.