Nurse von Mylendonk is the head nurse at the Berghof. She has a harsh, frank personality that rubs many residents the wrong way; Settembrini, for one, quite dislikes her. She carries a bag of thermometers available for purchase around the sanatorium, and she sells one to Hans toward the end of his first three weeks at the Berghof upon examining him (Hans has fallen ill just before he’s scheduled to head home) and discovering that he hasn’t checked his temperature since arriving at the sanatorium.