The Wheelers deduce that her parents did not teach her how to talk , and naturally assume it to be a case of parental neglect .
Ilse does not speak , even though medical examinations show she does not have a speech disorder .
The Wheelers deduce that Ilse 's parents did not teach her how to talk , and naturally assume it to be a case of parental neglect .
Ilse does not speak , even though medical examinations show she does not have a speech disorder .