chimerahouse welcome to Detective Forums! Thank you for following forum rules and not posting personal identifiers. I don’t know what web site promised you information. Detective forum is a community of people sharing public record resources and suggesting investigational tips.
Cause of death is as a rule listed on a certified death certificate but restricted in a number of jurisdictions.
If you’re looking for events leading up to and surrounding her death, contacting her family may be your best bet.
If you feel circumstances may have been a media event check newspaper archives by using the search tool for a local paper and check their site. You may find it helpful to use the search tool and read post by other members as public records links and investigative tips are scattered throughout the forums.
The below sites should help get you started.
http://www.pandia.com/people/index.html
http://www.peopledata.com/
http://www.zabasearch.com
http://www.melissadata.com/lookups/index.htm
Good luck