I thought he would go to the hospital if he let her do that to him, so I warned him, "Bailey, if you let her do that to you, you'll be sorry."

Who said this?

The above lines are said by Marguerite Johnson (or Maya Angelou), the main protagonist and narrator of the story "I Know Why The Caged Bird Sing".

Explanation:

Maya Angelou recounts her life from childhood till she also have a daughter of her own in her autobiographical book "I Know Why The Caged Bird Sing". Even though she was raped and had to live in poverty, she was able to overcome all these negativity and get a life of her own, finally getting a family and finding happiness.

The above lines shows the "house playing scene" of Maya, her brother Bailey and Joyce. The two were about to have sex when Maya, fully knowing the consequences of the act, warns her brother that it will lead him to a hospital visit. This she said because she had also experienced the same when she was raped by her mother's boyfriend, Mr Freeman.