It's possible that:
* She has primarily worked in Finnish cinema and television: Her work might be more readily found in Finnish resources or databases.
* She goes by a different professional name: If she uses a different stage name, that would make finding her credits more difficult.
* She hasn't had a very public career: Some actors have smaller or less well-known roles.
To find more information, you could try:
* Searching Finnish film databases: Look for Finnish film sites or databases.
* Using a Finnish search engine: Using a search engine like Google.fi might yield better results.
* Looking for Finnish film festivals: See if you can find any mentions of her work at film festivals.