She doesn't like people knowing what they are and Rose wants to be human she'd give everything to be human. Bella on the other hand 'is throwing it all away' is how Rose puts it.
Well at first it was cuz edward liked bella plus than her- cuz she was so used to guys starin at her.
Then in Eclipse, she hates Bella because bella is giving up every thing human that Rosalie would give anything for. The other thing is that Bella has the choice that Rosalie never had.
Because She 's A Human And She Doesn't like the idea of her becoming a vampire because its not a life style choice she would of chosen for her. And if she tells any one there secret all vampires will be exposed
Rosalie hates Bella because she thinks par chossing Edward Bella is choosing wrong. Rosalie doesn't think Bella should be a vampire. she should stay human
Rosalie doesnt hate bella but she does not like her, this is because she doesnt like people (humans in particular) knowing what they are, also she envies bella because bella is human and has the choice about becoming a vampire and rosalie believes bella is choosing wrong
she never hated her actually... she justttt dont understand her love. how someone can leave her life for her love.. she have never seen it. she thinks carving of blood is the main "gift" of vampire life . she just envy bella cuz she never had her chance to live her life ou i can say spend it so that they will die toghether but bella have her chance o experience all this but she is denying to use her chance instead of living it...
