The church seen in the background is in Montigny-sur-Loing. The model for the girl may the same as in the artist's 'Girl feeding a Bird in a Cage'. This was painted when Maris was living in Paris. It entered the collection under the title 'Vespers', although the girl appears to be trimming her hat with flowers rather than praying.
The National Gallery, Trafalgar Square, London WC2N 5DN