Given the high profile of her case and the blackmail-level secrets she would have had, that “suicide” has to be marked with a permanent question mark. Especially since she is the second suicide in that operation since its exposure.
If she was going to blackmail someone, she would have done that before being convicted of several felonies, wouldn’t she?
From what I've read numerous times over the years, women typically don't choose violent or potentially disfiguring methods of suicide. They favor poison or the ever popular alcohol-and-pills. Everything about this is just begging for further investigation.