When my sister died, my mom went a little "crazy" and needed someone to blame. She concentrated on the medical field, one doctor in particular. I typed up letters on the computer from her to him, but did not mail them, as I knew my Mom was in the highest stages of grief, and decided to wait a while and see if she still wanted to pursue him.
While my sister did not get a whole lot of help from this doctor, or others, it was not their fault so much as lack of awareness, etc...she died as a result of an eating disorder and was an expert at hiding her symptoms and explaining away her (lack of) weight to those who did not know her.
Anyway...I can totally see a parent wanting to find an outside "reason" for such a loss...but am also wary, due to experience. And I also did not want my mom, in her most vulnerable time, to make an attack against professionals. Later, my mother was relieved that the letters had not been sent, once she
reconciled herself to the realities of my sister's illness.