Hearing Lisa's answer suddenly made Oscar chuckle. He then looked down, trying to hide his wide smile.
At first, Oscar thought that Lisa would lose badly to Karina. He knew the woman didn't want to make a fuss in public. Besides, Oscar still clearly remembered the fight between Lisa and Karina back in the office. Their fight was usually won by Karina. That's why the man was afraid that Lisa would choose to be passive and let Karina mock her.
However, even if Lisa lost badly to Karina, Oscar would not be silent. That's why he was already prepared to open his mouth and reply to Karina's taunts with far more violent words.
When Oscar looked up, he still didn't expect that Lisa would dare to stand up for herself. The woman had indeed changed, and Oscar was naturally proud.