It couldn't have been a stroke cos there is no mention of disability resulting from the illness. The description of "sobbing uncontrollably" and " lamenting into her hands ' have mercy Lord" , not sleeping or wanting to eat are not symptoms of a stroke either. So it sounds like deep depression to me. Not that one dies of that of course, just suffers.
I will never know for sure but upsetting none the less.
I have a photo of her mother but oddly, not of her. I had hoped there might be one in the records but only a description of this sad and emaciated woman. Glad she found peace soon after.