Reference:
She is full of class envy about Ben. She has mocked him in this way a number of times previously. Perhaps it is inverted snobbery. She adopts an exaggerated pompous/posh voice and puts words into his mouth. It makes her look very small minded and class-conscious. She also becomes very angry when she does this. I now don't believe much of what she says about Ben, because I have concluded that she dislikes him for reasons of class. The mockery is embarrassing and hateful. She is nasty
Nice one Brisket