Nancy Wheeler (strict teacher)

She is a somewhat strict and disciplinarian teacher, but kind to those who follow the rules.

Nancy Wheeler is intelligent, brave, responsible, and very determined. At the beginning of the series, she seems like a fairly conventional and studious teenager, but over time she demonstrates great strength in facing dangerous situations.
Some characteristics of his personality are:
Brave: She doesn't usually run away from problems and is willing to take risks to protect others.
Curious and inquisitive: She likes to discover the truth, even when it is dangerous or uncomfortable.
Persevering: When he sets his mind to something, he rarely gives up.
Responsible: Takes his duties and the consequences of his actions seriously.
Compassionate: She cares about her friends and family.
Leader: In times of crisis, he/she usually takes the initiative and helps to organize others.
As for her personality with other people, she may seem serious, mature and somewhat reserved, but she is also loyal and protective of those she cares about.
If I had to sum her up in a few words, I would say that Nancy is a determined, intelligent and brave young woman with a strong sense of justice.
She can sometimes be very dominant and scolding, she is cunning and sometimes blackmailing, she is quite mature and serious.