I recently started reading New Moon by Stephanie Meyer, a book in the Twilight series. In this particular book, Edward and his family have left Forks because they have been there too long. Edward leaves Bella heartbroken after refusing to take her with them, or turn her into a vampire. One major issue I see in this book is that Edward is really protective of Bella, while she feels that she could get along fine, and she doesn't need his protection.
One time you see this issue is when Edward refuses to even think of turning her into a vampire. He says that he couldn't live, bearing the thought that he took her soul, while Bella doesn't care about that, she only wants to be with him. Like in many cases, Edward is doing what he thinks is right by protecting Bella. I think in this scenario Edward really needs to consider what Bella wants. I think that if Bella knows what she's doing she has the right to make that decision, and Edward shouldn't limit that. A lot of the time people can be over protective because they love you, but some times they need to give you space to make your own decisions, which is what needs to happen here.
Another case of being over protected is the way that Bella's dad Charlie treats her. He considers her almost as a child still, watching her every move to make sure that she's alright. You see at one point that Bella doesn't want that protection, she wants to be independent. I know that Charlie is her dad, but she's growing up and he needs to give her more freedom and be less invested in every little thing she does. I think this would allow Bella to grow, as well as appreciate her father more.
I think these are important lessons, as an adult, people my feel they need to watch over the ones they love. They need to do this, but still allow room for independence. I think that this is what Bella really needs.