No, I do not think we are being overwhelmingly negative. She is being given a good dose of reality.
She may be passionate about teaching Mathematics, which is respectable. However, this does not excuse her from the amount of complacency, hostility and the "I know everything" attitude that she has demonstrated.
We are willing to help (or at least I am), but only if she is receptive to help. As braintic said, how can we help somebody who appears to have placed themselves above us (in a rather unjustified manner, might I add)?