Zainub Priya Dala was hit in the face with a brick and a knife put to her throat last month after she praised Rushdie's writing at a literary event in a school in Durban, a city on the country's east coast.
She had said that she liked the styles of Rushdie - whose work has angered Muslims around the world - and Indian author Arundhati Roy, which led to a number of teachers and students attending the workshop walking out in protest.
Initially, Dala told media she was recovering at home from the incident, but now PEN America Executive Director Suzanne Nossel, who was visiting South Africa and had contact with Dala, has claimed that the continued harassment has led to the writer being admitted to a mental institution.
"Regrettably, rather than rallying around Dala, some members of the local Muslim community in Durban, South Africa, have ostracised Dala, putting her under extreme pressure to renounce her statement about Rushdie's work, to repent for her "sins," and to make a public vow of religious loyalty to Islam," Nossel said in a statement released yesterday.
A psychologist by profession and a mother of a young child, Dala ultimately consented to go to the hospital "to avoid intense and intrusive harassment at her home", the statement said, adding she also reports continued questioning about her beliefs by hospital staff.
However, Dala herself in a series of tweets contradicted reports that she admired the style of Rushdie - whose work has angered Muslims around the world - in the first place.
She, however, confirmed that she was admitted to a mental hospital.
"I am admitted to St.Joseph's Psychiatric Wing it was diagnosed that I have PTSD (Post-Traumatic Stress Disorder). No, I was not dragged kicking and screaming here," she said.
She said she spoke to a religious leader as she was in "turmoil" and his views were that she be admitted here so I can "reflect on my religion and imaan" following which she reluctantly came in for admission.
