It is possible that:
* She is not a professional actress: She may be involved in the industry in a different capacity, or she might be a private individual who has never pursued a career in acting.
* She uses a different professional name: Perhaps she is known by a different stage name.
* She is relatively new to the industry: It's possible she has only been involved in small projects, or is just starting her career.
To get a definitive answer, you may need to provide more context about Alice Livingstone or search for her on more specialized databases dedicated to film and television professionals.