In the second view of the 'book club' Lois pours herself another drink. She picks up the bottle with her left hand whilst holding the class in her right hand. From behind (whilst pouring) she is seen with the glass in her left hand (bottle in her right). From the front when she says: "..."Where's dinner?..." the bottle is back in her left hand and the glass in her right. However, in the next shot (from behind Lois) the glass in in her left hand. Then in the long shot from Lois's front, the glass is in her right hand.
At the first book club evening, Lois comments on the book and her neighbour asks for more wine. The hostess pours wine into the glass. In one shot there is just the bottle & glass. Then the hostess is holding the glass in her left hand.