When did that happen, didn't see that tidbit in her CS? Also, I never said she was, just that situations aren't that similar. Vordil was responsible for all the lives he lost that day, and when they were all killed, he felt he had failed as a ruler, as a warrior, as a husband, etc, etc. I just think that it's a different feeling than what Celesti went through. Both events are tragic, but they aren't tragic for the same reason is what I'm trying to say.
As for the dragon killing, to Vordil it was no different than killing sheep for wool or cows for meat, it only became personal after he lost everything. Until he met Kulak, they were nothing more than animals to him. I don't think it's a matter of knowing better, it's just a way of viewing things. Further more, dragons aren't perfect, they are not all benevolent beings. They have their good and evil as well and killing one isn't an automatically evil act, just the reason you kill them is what makes it bad or not.