Madeleine Groenhof-van der Heijden is the younger sister of Women on Wings’ co-founder Maria van der Heijden. Being an entrepreneur herself, Madeleine was interviewed by daily Dutch financial newspaper ‘Het Financieele Dagblad’ during which she mentioned being very proud of her sister Maria, for instance for co-founding Women on Wings. The interview it is in Dutch and available for those who have a FD.nl account.