There weren't many people who existed in the world, or people Fabian met in his life, whom he couldn't read easily. Fabian was perceptive and an observer. He had been observing people, so he could tell if one bore malice or innocent. But Tilly baffled him the more he interacted with her.
He had been in the mansion for four days now, as the forest was still surrounded. So, he thought of treating his wounds in here first before going out to investigate. After all, it seemed no one planned to approach this place.
During his stay, Fabian cleaned the house in his free time. Cleaning and doing house chores had been therapy to keep his head calm and clear. Also, since he was stuck in this place, it would help him kill time.