I do agree with you Fabuloso, but I am not clear that the OP has even spoken to the director about the matter yet. Yes she said she spoke about the teachers son issue, but I can't see that she's addressed this specifically. As a director I would take the complaint seriously and yes the staff member may be suspended pending investigation - but I would certainly be annoyed if a parent didn't come to me about it and went to the QLD office and I knew nothing about it.
If she came to me and I wrote off her concerns, then she would be well within her rights to go to the office as I wasn't doing my job. There's a difference between not doing your job and no being enabled to do your job.
Also the state body would ask the parent why they hadn't addressed the concerns to the director prior to contacting them. Many years ago I had a minor incident where a parent wasn't given an incident form to sign - there was a form, but the staff member forgot to get the parent to sign. The parent contacted the QLD office who contacted me about the parents upset and I knew nothing as she'd not even mentioned it to me. The QLD officer wondered why on earth the parent hadn't spoken to me first.