It varies. She may, or may not, mean it. If she means it, it may still be temporary.
Usally it means the opposite
he hates you
For whatever reason of hers she does not like you.
That she really does love you
it mean he likes you more than a friend or he hates you
She fancies you but is to shy to say it
it means he hates you.
means he dont hate you
that means he loves or hates you still he might love you!
Depends on tone, but she probably doesn't hate you.
he doesn't want you to know he likes you!
tell her to go to hell lol ask her why she hates you