""She only found out about her friend's daughter's score after she had already accepted the place"
At which point she realised that there were at least 188 kids above hers on the waiting list. And she still thought that there was no mistake?
."
No, if you look back you see that she then phoned the department and said are you sure there is no mistake? and they said 'Yes!'
"It wouldn't surprise me if they used this against her in the appeal. I mean, she repeatedly queried the 'mistake' so it could be argued that she didn't truely believe that her DD had a legitimate place."
See my post before yours, Habba. The LGO found maladministration despite a prompt letter explaining that there had been an error, because the letter didn't go far enough in retracting the offer and the parents still had cause to think they had a place.
The panel can't use the facts against Perma, because their only consideration must be 'were the admissions rules fairly and consistently applied'. The answer to this has to be 'No.' Therefore, they have to find in favour of Perma.
I will continue to throw the admissions rules around until people realise that this isn't about opinion as to whether it's fair or right, it's about whether a procedure was correctly followed, which it wasn't.