(my headcanons) she loves the Weasley name. She loves being a Potter as well though and she’s fucking proud of it. I don’t think she changed because she didn’t like “Weasley” or any other reason. I think it’s her own decision to proudly carry POTTER name on her back (literally) because Harry didn’t have anyone else from his family anymore. And that’s a way to have him during her quidditch matches, considering how nostalgic Harry would be about playing Quidditch.