Here's the Wikipedia link to the differences between the fim & the movie: (Yes, spoiler in link)
http://en.wikipedia.org/wiki/My_Sister%27s_Keeper_(film)
Here is a synopsis for the whole movie: (Yes spoiler in link)
http://www.themoviespoiler.com/Spoilers/mysisterskeeper.html
As for authors selling the rights of their books to be made into films, Stephen King talks about it in his book,
On Writing. They do it not only for the extra money, but the name recognition, which helps them sell more books. He wrote for
many years before his book
Carrie, came out. When it was made into a movie, overnight, he became a household name.
He routinely sells the rights to be made into movies. From what I've heard from his book fans, they routinely massacre almost all those films, so they don't even resemble the books. Doesn't matter - we ALL know who Stephen King is, even if you do not read his books.
J.K Rowling already had more money, power, clout & fan base than God at the time they approached her about making the HP movies. She didn't
need to have her books made into movies as other authors do. She had ALL the negotiating power on
her side. She could have walked at any time. I'm sure there were massive stipulations to stay true to the books, that they had to agree to from the very beginning, or she probably told them don't even bother having a first meeting.
She's very tight with the rights of her books and what she will and will not allow to happen to them. She has so far not agreed to having the books made into eBooks for Kindles or other readers. She says she doesn't believe in them. She doesn't need the money, so she doesn't have to give in.
The film,
P.S. I Love you, with Gerard Butler, barely resembles the book. They added characters in the film, took out others, set the film in NYC instead of completely in Ireland. The main character, (Hilary Swank,) was supposed to be Irish.
In
Confessions of a Shopaholic, I heard the main character is British in the book. In the movie, the actress made her American.
Ann Rice HATED the choice of Tom Cruise for
Interview With a Vampire. She was very vocal about protesting the choice. She changed her tune once she saw the movie, (and probably as her book sales rose dramatically. :rolleyes
