"Then, might I ask you to perform your attendant duties? Please take me to my abode. Our game shall start tomorrow. You may bother me at any time starting tomorrow, until I leave Alfheim," Estelle questioned.
In response, Neil nodded. For this instance, he would go along with Estelle. He would test the waters. Find out more.
Whether Estelle meant harm to the kingdom, his home and motherland, or whether she was a blessing that they were supposed to keep like a treasure just like the other royals.
Either way, Estelle was a fully-fledged royal in identity. Because the criteria to become one was to be the 'descendant' of the Moon Goddess' bearer. To possess the powers she had granted to the kin.
And Estelle did possess the power. They didn't know how far it extended to, but just by being in her presence, they could feel it.