I'm for full disclosure, no matter how painful. Since her closest living relatives are her grandchildren (your cousins)....be sensitive to what they would want, keep the profile private until you can get a feel for their reactions.
I too have a VERY tricky profile to handle. For now I've left it Private and posted the following comment (which only I can read).
"This biography hasn't been written yet. Not due to a lack of interest but because some parts of Judy's life were very painful and unexpected. The author is searching for the perfect words that reflect Judy's gentle spirit."
She died in 1990.... your topic reminds me to finish this task. Her living relatives (my cousins) are entirely behind disclosure too, because Silence is actually what caused the greatest harm.
From your questions , I think you'll create the perfect profile.