In the book "The Miracle Worker" James' life has changed for the worse because of his sister's disabilities. His parents have let Helen dominate their environment for so long that it is like living with an animal. James resents that Helen gets anything she wants from her father when he can not. James loves his little sister, but he has accepted the fact that there is nothing more in Helen than what they see.
In the beginning of the story James tell his father that he needs to have Helen put away. She is aggressive, untamable, and disruptive.