It's possible that:
* She has worked under a different name. Many actors use stage names, so it's possible she goes by a different name in the entertainment industry.
* She may have only worked on smaller, independent projects. These projects might not have widespread distribution and thus wouldn't be easily searchable.
* She may be active in a different field. She may work behind the scenes in film or television, or in a different industry entirely.
If you have more information about her, like a specific project she was involved in, or a time period she might have been active, that could help in finding more information.