Although her mother encouraged and guided her daughter, Delouis herself received no formal artistic education and her talent was left to develop unconstrained. She admits to painting instinctively and like Bonnard, one of the artists who has most influenced her work, ambience is more important than drawing. For this reason she paints directly onto her canvasses without any preliminary sketching.

Delouis is best known for her paintings of interior scenes although she also paints landscapes because of her love of nature. However she feels more secure within a delineated space where she can express the intimacies of an interior scene that is mainly occupied with depictions of women. Delouis celebrates the role of the woman at the very soul of the home, whether at her washing, in the kitchen or sewing, all set in an atmosphere of peace, gentleness and beauty.

Delouis continues to live and paint in France and has had many group and solo exhibitions in France as well as in the UK, USA, Canada and Russia.