I think it’s probably immediately obvious why this play is controversial. It’s a bold statement about the actions (or, more accurately, lack of action) of an institution that would rather forget everything around the time period.
When Greenwood is asked to list her symptoms, she keeps repeating that she can’t read and she can’t sleep. She is studying English for her post-secondary education, and reading as well as words define her life. When she can no longer read, what’s left of her world falls apart, and it drives her to attempt suicide. This is a review of Sylvia Plath’s The Bell Jar.