How does Nanny use power to control?

When Janie finally finds a "bee for her blossom," it is the man that she has been most sexually attracted to in her life. Hurston takes a naturalist approach to sexuality. Unlike her grandmother, Nanny, who sees sexuality as threatening and destabilizing and punishes Janie for kissing a boy, Hurston sees it as an integral part of identity. Nanny seeks to control Janie's burgeoning sexuality. That way she can control Janie's future relationships and the rest of her life. Nanny's idea is that her granddaughter should marry a wealthy man so that she doesn't have to worry about her financial security.