Feeling to protect

Mr Lee could not believe his ears. Is Hua drunk? No! She doesn't look it and she also doesn't take alcohol but then, why is she talking as though she isn't the same Hua he knows?

She smiled at her father and made a serious face. "You should go to sleep now father. You were already sleeping when I came in and you know, for this age, is not good to deny yourself of sleep."

She was so serious that old Mr Lee didn't even know when he nodded at her orders. "

Alright, with that said, I will also go to sleep. We have work to do tomorrow and I wouldn't want to disappoint our new client."

She picked her phone from the table and hurriedly upstairs leaving the old man confused. He was sure that this was still Hua then what could have happened? Why is behaving out of character?