Adrian Mole Doreen Slater, whom Adrian privately refers to as "Stick Insect". Brett makes a reappearance in the later books as a successful yet unpleasant businessman who loses his fortune during the credit crunch. Doreen is killed off in "Prostrate Years". Pauline temporarily marries her younger lodger Martin Muffet, who eventually leaves her for Adrian's girlfriend Bianca Dartington, giving Adrian and his mother a shared heartbreak. Later, George and Pauline effect a partner swap with Ivan and Tania Braithwaite (parents of Pandora), only to reunite after Ivan's untimely death. Adrian's half-sister, Rosie Germaine Mole (after feminist Germaine Greer), grows up to be
Adrian Mole and the Weapons of Mass Destruction and emotionally unstable and a hypochondriac. She seems to always expect to get what she wants and proves to be manipulating Adrian. She even lies that she is pregnant with Adrian's child in a final attempt to make him marry her. At the end, however, she marries Bruce "Brainbox" Henderson. Daisy is Marigold's elder half-sister. She is the "black sheep" of the Flowers family, having embraced the materialistic lifestyle that they claim to renounce. She and Adrian are attracted to each other, and he eventually leaves Marigold in favour of her. Her father, Michael Flowers describes her as a Hedonist.