After Katrina graciously fed him, Aaron refuses to leave and even has the nerve to negotiate with her. She wants to pull out her hair in frustration.
Katrina is not as intense as Aaron. If he refuses to leave, she is physically incapable of pushing him out. She starts to get a little desperate.
Since Aaron is making trouble out of nothing, she can't bring herself to care anymore.
Katrina has to catch a flight early in the morning tomorrow, not to mention pack her luggage for their overseas mission. She doesn't have time to quarrel with Aaron.
The first thing she needs to do is to get Aaron out of here. "Fine! I'll accompany you to your stupid party tomorrow! Now get out! Get out!"
When Katrina readily accepts his invitation, Aaron's eyes widen with a trace of surprise.
He decides to concede finally. In the face of Katrina's cooperation, he doesn't want to be too hard on her.