Based in Norfolk, Slattery studied Fine Art at Coventry Art School. Slattery held her first solo exhibition held at the Ice House, Holland Park in 1990. Slattery has since exhibited her work at extensively at galleries including The Orangery Gallery, Red Barn Gallery, The RONA Gallery, Cambridge Contemporary Art and Mendell's Gallery. Slattery has been awarded multiple awards including The Alfred Daniels Award and The Dry Red Press Sward. Slattery was elected to the Royal Society of British Artists in 2015. Her work is held in numerous collections including Yoshikawa Medical Clinic for Children in Japan, Bedfordshire County Council and Norfolk Contemporary Art Society. Ruth Borchard Collection acquired Slattery's self-portrait in 2015.
Both a figurative and landscape painter, Slattery's work draws inspiration from the wonders of her surrounding countryside. Through her self-portrait, Slattery tells a story without language, drawing on her fascination with the way in which the visual can capture consciousness. The influence of the mythic can be seen in her work with the vine that surrounds her suggestive of some greater storybook-esque narrative. Slattery cites her key inspirations as stories and myths she was told as a child, the work of Edward Hopper and sheep.