Her father, immigrated to Belfast from Holland to work with his uncle in the family linen company, which was established in 1860.
[3] At the Belfast School of Art, Praeger studied under the painter George Trobridge, and became a member of the Rambler's Sketching Club in 1886.
In 1888, she enrolled in the Slade School, studying under Alphonse Legros and won a silver medal for drawing.
[7][3] Her best known piece, The Philosopher, was first shown at the Royal Academy in London during 1920, subsequently Praeger made several copies for various museums.
[2] She died at Rock Cottage, Craigavad, County Down, on 16 April 1954, the day before her 87th birthday, and was buried in the Priory Cemetery.