Why does Janie hate Nanny?

Janie 'hates' her grandmother because she feels that Nanny
is limiting her potential.  She doesn't exactly realize this at the beginning of the
novel, but Janie knows that she doesn't like the way her grandmother is always making
decisions for her.  Nanny chooses what she thinks is best for Janie, rather than
allowing Janie that opportunity herself.  Nanny wants Janie to marry into money so that
she doesn't have to work and she can be comfortable.  By the end of the novel Janie
realizes why she despises her grandmother's limiting demands when she finds real love
and it has nothing to do with money, wealth and prestige.  Janie loves her grandmother
because she is trying to protect her, but she hates her when she feels that she has no
choice in her own life.  Nanny is trying to protect Janie from having a hard life, but
that isn’t necessarily what Janie wants for herself.