Rosalie is not the villain!!!
Rosalie Hale is one of the most misunderstood characters in Twilight, largely because Bella is the protagonist and narrator in twilight and Edward is the narrator in Midnight Sun. We never really get an unbiased view of Rosalie. Through Bella's perspective, she often comes across as cold, shallow, or even cruel, but there's a lot more going on beneath the surface.
At first, Rosalie's dislike of Bella stems from two main things. The first is jealousy though not in the way people usually think. Rosalie was used to being admired for her beauty. As a human, her appearance was treated as her greatest asset because she grew up in a time when her parents viewed her beauty as a means to improve the family's social and economic status through marriage. Over time, Rosalie internalized the belief that her beauty made her valuable. So when Edward showed absolutely no romantic interest in her, despite showing interest in Bella, she took it as an insult to something she had always been taught defined her worth. It wasn't because she wanted Edward; it was because she couldn't understand why he didn't want her.
The second reason is much more practical: Bella genuinely posed a risk to the Cullens. She was a human who knew their secret, which endangered the entire family. If anything had happened to Bella or if one of them had lost control they would have been forced to leave. Rosalie's concerns weren't entirely unfounded. The Cullens eventually did have to leave because of Bella's involvement in their lives.
Then Bella decides she wants to become a vampire, which is where Rosalie's resentment deepens. For Rosalie, this is almost incomprehensible. She would give anything to be human again. Bella has the opportunity to grow old, change, experience new stages of life, have children, and build a future. Rosalie lost all of that the moment she became a vampire. So when Bella willingly throws that future away, Rosalie sees it as a tragic mistake. To her, Bella is a teenager making an irreversible decision without understanding what she might want in five years let alone five hundred.
Another criticism Rosalie receives is her behavior during Bella's pregnancy. Many people argue that Rosalie only cared about the baby and not Bella's wellbeing. But that's exactly why Bella turned to her in the first place. Bella knew Rosalie would prioritize the baby above everything else, even Bella's own safety. Bella wasn't shocked by that, nor did she feel betrayed by it. She specifically chose Rosalie because she knew where Rosalie's loyalties would lie. Rosalie gave Bella exactly what Bella wanted someone who would fight for the baby's survival no matter what.
Honestly, Rosalie is a deeply tragic character. A lot of her actions make more sense when you view them through the lens of someone who lost the life she desperately wanted and has spent decades mourning it. You don't have to agree with her choices, but reducing her to "the mean blonde vampire" misses a lot of what makes her interesting.
And while we're at it, I can't help noticing that Stephanie Meyer seemed to have a habit of making her blonde female characters the antagonistic or "mean girl" types.
