It's possible:
* The name is misspelled. Could you double-check the spelling?
* The actress is not well-known. It's possible she is an emerging actress or works primarily in smaller productions.
* She might be using a different name. Perhaps she is known by a stage name.
If you can provide any more details, like the type of roles she might play, the time period or any other projects she might be known for, I might be able to help you further.