That's more of an answer than Caspar was expecting, and he doesn't know what to say in response. That sounds like something Adia could relate to more than him. So he simply nods and then repeats Hermione's words in Caprican, including the bit about the runes.

She takes the notebook and pen, flipping to a new page, and begins writing something out to Hermione. Bucky reclaims his wing to give her writing arm a little space.

That is how I feel about my first boyfriend. Before that I was either just a friend or not noticed at all. She's glad that Hermione has no hard feelings. Caspar told me about Arithmancy. It's the first field of magic he's had anything nice to say about.