Twilight +HP Find Magical Creatures

I've read a lot of Twilight + HP fics, and I've noticed that there's no story where Luna appears. I love the crazy girl so much that I decided to make a fanfic with her as the protagonist to show the unique charm of the crazy girl. This article is a story after HP and the original Twilight. Our crazy girl has grown into an excellent wizard reporter. Now follow her to pursue magical creatures! Unexpectedly, I failed to find the curved-horned beast, but encountered the most amazing magical creature-a vampire... In the final battle to defend Hogwarts, a large number of highly intelligent creatures appeared, but why were there only no vampires... What is the connection between the mysteriously missing Deathly Hallows and vampires...