Eileen is disparaging of her family tree because of the disreputable deeds carried out by so many of her ancestors. The Queen prefers to think of this as "just what they did then" though Eileen sees this as a fiimsy excuse. While Eileen was in the Kingdom she took a great interest in other family trees. As she went out and about serving the realm she often met loads of people/beings only too keen to get her opinion on their trees. These are all produced as works of art with gold thread and miniature paintings being de rigeur even for the simplest tree. The Queen naturally consiiders only the royal family tree to be of any interest. Eileen loathes that attitude though the Queen rightly points out every single one of their mutual ancestors took the same view as the monarch.
FNN sometimes run programmes showing how to produce family trees properly and to stress the importance of keeping such things up to date.