Portia had recently been in a bad mood. She was depressed after being blackmailed and paying millions to keep her photos from being released to her fiancé, who kept delaying their wedding for unknown reasons.
Fortunately, that person kept his word and did not send the photos to her fiancé, or she would be in big trouble.
Would she have made such a mistake and tried to take Sarah down if she hadn't been threatened by Britney in the first place? She wouldn't have dared!
Britney was the one who had done this to her. It didn't really matter to her now whether Sarah was the Sarah they killed back then. This individual must be dealt with. Because she had already provoked the other, the other refused to let her go, which was frustrating.