is she right or wrong?

A very young teenager, prepared to leave for school, on her very first day; and this is the mother instructions and warning to her;
MOTHER: daughter, when you get to school, be very careful, with male student, always sit like a lady and never allow anyone to see your underwear(pant).
DAUGTHER: yes mum.
Later that day, at noon, the girl returned with so much excitement, and from afar, she started screaming;
DAUGTHER: mum! mum!! mum!!! I got you a gift..
the mother out of excitement too, rushed out to receive her daughter, but she saw bag with unknown items with the daughter;
MOTHER; what bag is that?
DAUGTHER: mum, the nylon contains ripe mango
MOTHER(exclaimed): where did you plough all this?
DAUGHTER(explains):while in my way home, my friends and I saw ripe mango trees and we decided to climb and plough as many for us and for our parents, which I knew you would like.
MOTHER(angrily): haven't I warned you, not to climb a tree as a girl, especially around male student, do you want them to see your pant?
DAUGHTER(smiles, showing the mum the pant, in her school bag): she replied, mum, I am aware, that climbing the tree with my pant on, will make everyone see my pant, so I decided to remove it, kept it, in my school bag. So no one saw my pant mum....