As a teacher I would have preferred the girl's mother to come and tell me what was going on, so I could deal with it, rather than writing a letter, especially if the letter was written to the headmistress or master rather than to the class teacher.
However, as a mum, I would probably have done precisely what your DD did, OP.
I am shocked by the number of adults here who seem to think you can stop bullying by bullying the bully!
Whatever happened to teaching children by your example?
How should a family manage an estranged relationship?
Why on earth would anyone plant.....
Only 50% of middle age adult manage more than 1 brisk 10 min walk a month.



