This is a weird little exchange, but it shows that Therese and Carol get each other on a certain level. But how does anyone else pronounce Therese's name? She never says.

This is a telling statement on a few levels. One, Therese picks up that Carol is in an unhappy marriage. And two, Therese doesn't care about Carol's marriage at all—she has no qualms about pursuing Carol, even though Carol already has a family.