User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-9703010-20130611135847/@comment-98.114.2.109-20130611150417

Well, not necessarily. It's said that holding grudges is a fatal flaw for children of Hades, not Pluto. There are differences between the two. But it is possible that holding grudges is Hazel's fatal flaw.