Inge Liesbeth Alfonsina Heremans, who signs her work with her initials Ilah, spent her adolescent years in an old-fashioned Catholic convent school. After surviving this, she eventually started her study of Applied Graphics at the Institute Saint Luc in 1989. When she graduated, she did not want to start working at a graphic studio or in advertising, but decided to pursue a study in philosophy at the University of Leuven in 1993. She met her boyfriend and got pregnant with a wonderful son, named Wolf. At the same time, she started drawing the comic strip 'Cordelia' for the newspaper De Morgen. In 2000, she created the male variant of Cordelia, 'Claus' for Menzo magazine, and a child variant for children's magazine Klap. Since July 2000, Ilah is a full-time professional comic writer, as well as mother of her daughter, Min. In May 2001, the first 'Cordelia' book was published by Oogachtend. The second book, 'Cordelia Oraal', appeared in October 2003.
In 2015, she was one of the six Flemish artists to draw a comic book starring Willy Vandersteen's 'Suske en Wiske' for S.O.S. Children's Villages, based on a story by a celebrity. Ilah made the story 'De Barabass' with radio maker Siska Schoeters. The other other artists involved were Charel Cambré, Jan Bosschaert, Ivan Adriaenssens, Kim Duchateau and Kris Martens.