Liza’s mouth
I’m sorry but Liza goes from being a liar to over sharing. She just talks way too much. Her mouth is the biggest liability and it’s not just her lies about herself…she’s always over sharing company info and telling people close to the media details about things.
Even when coming clean she is still an active liar and continues to be one every time she swears to keep secrets and then tells the opposite party.
Also Charles proves how blind love is. He’s dealing with a divorce and keeps making business decisions based on his feelings with Liza. He’s literally treating the wishy washiest person ever like a wife and making long term decisions for someone who straddles the fence.