'How could he do that?' thought Duchess Amberblaze.
Recognizing someone's talent is not simple, especially in complex things like battling and combat. Even some experts need days or months before fully deciding if the person is genuinely talented or not.
Moreover, the judging criteria are usually based on someone's personal experience. For example, a fire elemental combatant may say someone who has a great affinity with fire is talented in combat but not in other aspects.
This kind of judgment is not wrong but also not correct. However, to judge someone if they are genuinely talented in combat or not, they need to be evaluated not just from one aspect but all aspects. It means the judge also needs to be proficient in these aspects.
While thinking about Angus, Duchess Amberblaze looks at her niece fighting the incoming Plague Hound and is once again surprised.