Over the course of three months I drew green, yellow, purple, red and orange chalk shapes on the walls of the brand-new Bambino day-care centre in Molenbeek. The building is the crowning achievement for Miss Rita, who has ruled the roost here since December 1972. ‘The drawings are the last thing that needs to happen,’ she says. ‘Then I can retire. After forty-eight years, it will finally be complete.’