How does Melchor utilize sensory details in order to portray Norma's feelings about childbirth?

When Melchor depicts the hospital where Norma was restrained on a bed, she is careful to include a number of sensory details that indicate Norma's feelings of disgust. At 13 years old, having become pregnant by her stepfather Pepe and having had no other sexual or even romantic experience, Norma feels desperate to escape from the confines of the hospital, where all she sees is gore and the only sounds she hears are screams.