Isobel has no intention of telling Katherine what went on between her and Ilde - at least not right now. If Katherine asks later, she'll answer, perhaps honestly, but for now, she prefers to leave that topic completely alone.

"We seem to be adjusting to the situation." Meaning the whole doppelganger thing. Which... is also something Isobel needs to find out. "And I hope the day has been treating you well, Katherine."