They say that sometimes deceivers in love allow themselves to be found out, to bring things to a head and gain their freedom. Whether or not Livia was complicit in Terry discovering her stash of contraceptive pills and realising how she'd deceived him is questionable. She had started to feel that despite his strong loyalty to Terry her husband and his brother, she now had Tony under her spell. It was Tony who was wanting more of her. He was demanding her twice a week now. He was nicer to her. He had been unwittingly entrapped.
Or so she thought.