It is possible that:
* The name is misspelled: You may have a slightly different spelling of the actress's name. Try searching for variations or looking for a different name altogether.
* The actress is relatively unknown: Many talented actors work in the industry without achieving widespread fame. If she is not in major productions, she may be difficult to find online.
* The actress works under a different name: Some actors use aliases or stage names.
To help me find the correct information, please provide any additional details you know about Marsha Warner, such as:
* Years of activity: When do you think she was active?
* Types of roles: What kind of roles did she play (e.g., comedic, dramatic, supporting)?
* Any specific movies or shows: Do you remember any specific titles she may have been in?
With more information, I might be able to help you find the actress you are looking for.