It's possible that:
* The name is misspelled. Please double-check the spelling.
* The person may not be a well-known actress. It's common for actors to have smaller roles or to work primarily in regional theatre or independent films.
* She might be using a different name professionally.
If you have more information about Jane Wall, such as her date of birth, place of origin, or any specific projects she might have been involved in, it would be helpful in finding more information.