Probably because she knows he’s ruining his best chance at a relationship with his stubborn, angry behaviour.
She seemed to keep looking at him in a way that was like “Come on Tim, let this go”.
Its ironic, because Tim thought everyone was sticking up for Lucinda at the CC, and even after he explained just then why he was pissed off, all the people there still stuck up for Lucinda including his own friends 😂
Dude doesn’t get the hint