MEGAN THOMPSON:

Letters Mortier's mother left behind did little to help him make sense of how she died.

But wasn't it his mother's choice, and hers alone, to make? Mortier says his mother's depression came partly from being estranged from her children, so her doctors should have reached out to him. And, he's convinced his mother – severely depressed and on medication – was not in the right state of mind to make such a decision.