Resistance
Although Su Ci Yi said that she'll cut the man's tongue the moment he called that intimate words but those words were only a hyperbole of emphasis. She was not a petty person just to do that with a single human. He was fully a mortal that was weak and 100 times far away from her strength. It's like killing a flea when she does that to the man.
But this man, Qin Yu was different. As if he treated the life of tiny men like a single ant in his big palm. Su Ci Yi's prejudice was kind of messed up with him. She doesn't want to think about what kind of man he was or the kind of thoughts lurking on his head. She had been keeping him and his child in the villa without taking anything in return. She fully knew the danger lies ahead the moment on their little mortal life.
But she doesn't like the fact of his meddlesome and hidden nature.