She was just trying to attract Kingsley's attention and achieve her goal.
Lucy did not plan to stay with Kingsley for too long. She raised her glass and said, "Here's a toast to you."
After that, she finished the glass of red wine in one gulp.
Kingsley looked at her glass of red wine and finished the glass of red wine in his hand.
Then, Lucy bowed politely.
It was the standard etiquette of the upper class, and Lucy was not the only one who knew how to do it. Everyone knew how to do it, and they were all very familiar with it.
That was the basic skill of an assassin because when an assassin killed someone, they had to disguise their identity. Etiquette was the most basic skill, and even the servants here knew it.
Just as she turned around and was about to leave, Kingsley suddenly called out to her, "Lucy."