Dear Ms. Provancial,
Thank you for posting your request on History Hub!
We suggest that you review NARA’s Resources for Genealogists, as well as the History Hub Blog titled Suggestions and Advice for Family History Researchers. Also, the FamilySearch Research wiki for United States Genealogy may be useful.
We suggest that you contact the State Archives or Health Department of State to request a search for the birth or death certificates of Sharon Ann Gay if you know that state where she was born and buried. You may wish to note any name variants or broaden your search for the surrounding years.
In addition, the FamilySearch Research wiki for How to Find United States Vital Records may be helpful; and Ancestry Find A Grave website for her burial location. There may be a fee for using Ancestry. Instead, please check for access at your local library as many library systems subscribe to these sites, making them free for their patrons.
We hope this is helpful. Best of luck with your research!