She was angry that Bella knew that they were all vampires because it meant that their secret was at risk of being known by other humans. This put them all in danger. She also doesn't particularly like Bella anyway.
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She did it because the Cullen family made a meal for Bella but then she already ate so Rosalie was very frustrated that they went through all that hardwork for nothing.
It doesnt say.
Rosalie almost had a home run when she is caught out and Bella tells her she is out, rosalie glares at her and brushes past her, clearly annoyed with her, carlisle tells her "nice kitty." he says this in an attempt to tell rosalie to calm down and be nice to Bella Actually he wasnt being patronising and calling her a cat. He was just comforting her a bit because she didnt do so well. 'kitty' was just a sort of nickname he came up with on the spot.
drake is says he wants to smash her but he say they are good friends they are not dating.
All I know is she is born in 1915.. They never say when her birthday is
texas - say what you want