Phil told her that it was confirmed Vito was seen in a car with a man but refused to go into deatils saying that it was too repulsive. Phil also said that the witness had no reason to lie, so he was obviously referring to Finn.

The question, again, is WHO spilled the beans? Paullie is the front-runner in my mind... he was so unhappy about the news and having to accept it (as witnessed with the meeting with Carlo, Sil and Tony).

BTW - Dunno if its been mentioned before, but the actress who plays Vito's wife is Lorraine Bracco's (Dr. Melfi) sister in real life.