It's possible that:
* She's a relatively unknown actress: There are many talented actors working in the industry who haven't had major roles yet.
* The name is spelled differently: It's always a good idea to double-check the spelling.
* She uses a stage name: Some actors choose to use a stage name, which could make it harder to find their credits.
To help me find more information, could you please provide any additional details about Erin Lilley?
For example:
* Any specific years she might have been working in the industry?
* Any other projects she might be known for?
* Is she associated with a specific genre of film or television?
With more information, I might be able to help you find her filmography.