How does Olivia react to the fighting?
She is mad at Sir Toby and is worried that Cesario (who is really Sebastian) will be offended.
She yells at Sir Andrew and tells him to leave Illyria at once.
She begs Cesario (who is really Sebastian) for forgiveness and insists Toby apologize.
She tells Cesario (who is really Sebastian) that if he would like to, he can banish Sir Andrew.