21 years old but gives a younger impression.
She was the elder sister in Night Swim (2024).
I thought she was some teenage actress but turns out she's an adult. I think her seemingly petite stature contributes to her passing as a teen.
She was also in The Hunger Games: The Ballad of Songbirds & Snakes (2023) though it must have been a minor role because I can't recall her from that movie.