After ending the life of the demon that dared to cross the border and step into his territory, Nicholas had a much greater satisfaction in watching his soldiers hold the ugly thing down and ripping its body into pieces.
This would be nothing but a warning to whatever demon lingered out there and he'd like to see which demon would be brave enough to step into his domain after that.
Taking a walk in the garden, he caught sight of his mother at the corner of the garden, sitting in the arbor with the strange lady next to her. They seemed to be having tea and enjoying their light conversation but it was something that triggered his suspicion.
When did his mother become so comfortable with strangers? It's never like his mother to be so nice and worst of all, she's having tea with a total stranger.
The stranger might have saved his life but that doesn't mean he'd blindly trust her and that's exactly what his mother was doing.