Every summer until she was fourteen Bella would travel to Forks to spend time with Charlie. How long would she stay?its about twilight
The answer to this question is found on the first page of the Chapter 1, which states, "It was in this town that I'd been compelled to spend a month every summer until I was fourteen" (3). When Bella turns 14, she says, "I put my foot down," (4). After that she spent two weeks in California with her dad. But as the book opens, this year is different because Bella is going to stay with her dad for the school year. Her mother is remarried, to Phil, and travelling with him, so Bella has agreed to leave Phoenix and live with her dad in a town she hates.
Bella most times spends quite a while with her dad but since her mom was going to travel to Europe, she decides to stay with her dad and bond with him/ know him better for the rest of the school year.
Bella usually spent a month or two in the Summer with her dad. But now that her mom wants to travel to Europe with her now husband who is a European basketball coach. So she lets her mom travel while she stays with her dad and gets to know him a little better. She even says how it was his turn to keep her now haha.