It is possible that:
* She is a relatively unknown or new actress: Her work may be limited to small roles or independent projects.
* The name is misspelled: Double-checking the spelling and searching for similar names might reveal more information.
* She is not an actress: The name might belong to someone involved in other fields, such as filmmaking or production.
To find more information about Vivienne Walshe's acting career, you can try searching online databases like IMDb or researching industry publications. You can also check social media platforms for any potential profiles.