A few minutes' research would have told the writers that Toxoplasmosis is treatable with anti-parasitic drugs. The most common mental illness seen with it is schizophrenia.
The story could have been formulated that they offered her treatment for toxo, but she was worried she would no longer love her cats and that they might suffer.
The story could have been formulated that they offered her treatment for toxo, but she was worried she would no longer love her cats and that they might suffer.