In this commonplace chatter, which lasted some time, the original subject seemed entirely forgotten; and though Catherine was very well pleased to have it dropped for a while, she could not avoid a little suspicion at the total suspension of all Isabella’s impatient desire to see Mr. Tilney.

I was glad to see that Catherine is aware of Isabella's...well, I'm not sure what to call it, but she is aware, at least a little bit, that Isabella's words and actions aren't exactly matching up. There are some other instances of Catherine becoming more self aware in this week's reading, too, but I will get to those later.