My Sister's Keeper

I finished Go Ask Alice, and now i am reading My sister's keeper. My sisters keeper is about a girl who has been diagnosed with leukemia when she was four, and her parents had a child made identical to the daughter so that it could be a donor for the daughter. 

Anna was born, and from the moment she was born she was giving parts to her sick sister Kate.

Anna was made in a petri dish to match all her  sisters trait.  When she grew up she realized what was going on and she did not want to be a donor anymore.

But Anna went to a lawyer to try and sue her parents for " medical emancipation" so that she wouldn't have to give Kate her kidneys. 

Her parents were very upset about it and don't know what made Anna want to go through with this .

I saw the movie way before reading the book and it has the same concept but different outcomes so far..Y