time was not passing, as she had just admitted, but that it was turning in a circle
There are many great quotes in this novel, but this is one of my favorites. I really feel that Ursula is extremely alone in this moment. She's having a sobering epiphany or sorts and is keeping it to herself. In this instance I think her solitude is, if anything, good for her. She brushes it off as a thought that doesn't even effect her.