The Queen keeps her own diaries which, with the consent of her Council, will only be published 50 years after her death. The Queen sees this as her version of events, of history to come. The Council think the same, hence no publication during her lifetime and for a while beyond it. Nobody, including Eileen, has ever seen what the Queen writes though Eileen is scathing enough to believe her cousin will only put down things that make her appear in a good light. What Eileen hopes is that future magical historians read the Queen’s diaries with a massive pinch of salt.
Jenny is not at all impressed with what she’s found out about the magical world’s past. She considers their attitude to humanity’s fighting hypocritical. Nor does she want to be caught up in the realm’s future! Aside from her natural misgivings, she has read several stories of heroes from unexpected backgrounds going on to make good. It’s what they have to do to make good that worries Jenny - killing foul fiends, giants, ogres, dragons etc. She liked fairytales (her views are jaundiced due to Eileen’s revelations) but now seems them as dire warnings not to get involved with magic. This is Jenny’s lesson from magical history.