Simplify the following text for a Grade 8 native English-speaking person.
Original: Her most notable role to date is Katara from Avatar : The Last Airbender in the 2010 movie The Last Airbender , directed by M. Night Shyamalan .
Simplified: Perhaps her most notable role to date is Katara in the 2010 film The Last Airbender , directed by M. Night Shyamalan .