[X] The death of the Warboss, the shattering of an Almost-Rogue Idol, and the weakening of Mork.
We're not in a court of law and we're not asking for a reward like some bounty hunter. We're a part of the military and we're saying what's happened, no proof is needed. What's required from us is to say what happened, that's it. They've got no reason to think we're a liar, so unless they find evidence proving our words false, we'll be fine, especially as they find evidence that we're telling the truth - Mork's commissarial actions, interrogation of greenskins, possible widespread shaman head-explosion, stuff like that.
Our otherwise inexplicable vision of evil and sorcerous dwarves will certainly help establish that we're telling the truth.
Conversely, we don't want them suspecting that we're keeping information from them. That's bad policy in general, and it's extra bad policy given that we were guarding the gigantic treasure pile noted to be a greed magnet.
[X] Praise Panoramia. We didn't want her going into battle because exhaustion causes miscasts. She didn't go into battle until she saw orks about to descend on her comrades, and made the right judgement that the risk of miscast wasn't as bad as the risk of being overrun by orks. It was exactly the right reason and time to break orders, and in all honesty kept to the spirit of those orders.
Panoramia did something legitimately good here, for reasons explained above. Mathilde isn't a boot camp arch-disciplinarian or dogmatic dictator, she's a worshipper of Ranald, so someone breaking ranks for the right reason at the right time to do the right thing would be downright virtuous to her.