Willa's so full of questions about everything that happened during the lecture. Usually she would go hide in a corner and eat her lunch alone, but this was like, practically a handwritten invitation! Even alter Willa would have to be super excited about this right? Even shy, hesitant, alter Willa is studious, she couldn't possibly pass up this opportunity.
She's really thankful that there isn't a voice in her head overruling her talking to Keltham at lunch; being alter Willa doesn't seem like it'll be so bad after all! She'll try to avoid any dangerous topics about Cheliax or related things, but that just means she can talk about SCIENCE(!) instead.
Her head is spinning with all the little details and digressions of lecture that were missed or had to be glossed over for time, but there's one question she has to ask Keltham first, she couldn't possibly resist this one, it's just too tempting. Maybe he even intended them to get insatiably curious about it.
"What's 'computer-science'? Can you tell us all about it?"