* She is a lesser-known actress. There are many talented actors who work in smaller roles or in independent projects, so she might not have a widespread presence yet.
* She has a different name professionally. Maybe she uses a stage name or has changed her name since starting her career.
* She works behind the scenes. Perhaps she is a writer, producer, or director rather than an actor.
* There is a misspelling in the name. It's always possible that the name is slightly different than what you have provided.
If you have more information about Mary Mon Toy, such as her date of birth, hometown, or any other projects she may have worked on, it would be easier to search for her.