The classics tell us that, in relationships, the one between teacher and student comes second only to the one between parent and child.
In our country we call this type of mother love teng ai. My son has told me that in men's writing it is composed of two characters. The first means pain; the second means love. That is a mother's love.
I am old enough to know only too well my good and bad qualities, which were often one in the same.