"I'm prepared to ask Peter for a trial separation."

Not a divorce, not yet. There was too much to be worked out, and too much emotionally to jump right to that. Considering Peter didn't even know that she was seeing Will again.

"But before I do, I need to ask you for a commitment," she said. "I don't want to divorce him, whenever it happens, to marry you and then you're not here anymore."

Maybe it was cagey, but their affair had already fallen apart once.