What is the word used to describe the headmaster's mother, Zhang Guimei?

No regrets. Zhang Guimei, the person of the year who moved China, has created an educational miracle, and is known as the "burning lamp principal", which is described as the spirit of tenacious struggle, never giving up and no regrets. With love and wisdom, she lit up the life dreams of thousands of mountain girls, and was affectionately called "Mother Zhang" by the students.