I believe that Cat would be the one person in Penumbra whole would engage in "beautiful talking." Her colorful and joyous personality are great traits that make her suitable for this type of conversation. Whenever she talks she gets immersed in whatever she is talking about, and she always spins an elaborate plan or story. Like when she created the plan for googlers to crack the code, her passion and intent was so driving that it convinced everyone to support her idea. Her way of talking transports and captivates everyone she talks to, she doesn't start conversations, she just speaks her mind in an eloquent and inspirational way. That is why I believe that Cat is the one character in Penumbra who engages in "beautiful talk."