It's possible that:
* The name is misspelled. Could it be "Gabrielle Saïd" or a similar variation?
* The author is not very well-known. Many authors exist, and finding information about those who aren't widely published can be difficult.
* The author uses a pen name. If you have any other details about the author or their work, please share them!
Could you please provide any additional information you have about Gabrielle Said, like:
* What kind of books do they write?
* Do you know any titles of their books?
* Do you know what genre they write in?
* Do you know anything about their nationality or where they live?
With more information, I might be able to help you find more about this author!