Suggest checking spelling of surname.If possible, confirm place of death, whether "Ruby" may have used another given name, and whether "Souchet" was the last surname of Ruby.If no success with below resources, suggest that in next query, you list all known dates, places of BMD (or estimates of same) for Ruby's parents, spouse(s), siblings, children --- and migration pattern, if known.
Broward County Library, main branch:http://www.broward.org/libraryhttp://www.broward.org/library (Suggest asking librarian to check computer for obits on both newspapers, and to check out appropriate city directories, to determine years of arrival and departure from Deerfield Beach, Broward County, FL area.)
To request Florida Death Certificate:http://www.rootsweb.com/~flbrowar/howto.htmlhttp://www.rootsweb.com/~flbrowar/howto.html You need to specifically request "cause of death" be included, or it will be a blank line. Directions on same web site for obtaining land records and probate court records.
To request B-M-D certificates in other US States:http://vitalrec.com/usmap.htmlhttp://vitalrec.com/usmap.html (Recommend asking at the county level first, if available.)