That was over 4 years ago in 2017.
Today she is 18, and has starred in 15 movies in total, 4 since The Beguiled was released.
In The Beguiled, I think Oona Laurence looks:
The Beguiled scores 5.7 out of 10 on The Movie Database.
Oona Laurence's first acting role was as 'Penny Dreadful' in Penny Dreadful, released in 2013 when she was 10.