Feng Xiupei called her younger sister an idiot in her heart before sweetly saying, "Actually, if Eldest Sister wants to take control of the Feng clan, then you can just tell Father. Why did you gang up with others with ill intentions to switch out the seal? Then, after that…anyway, it's good enough that you're back. Nothing else is important."
If she didn't speak up now, then Feng Tianlan would destroy her reputation as the top female genius. She was not going to allow this to happen.
Feng Tianlan wanted to applaud Feng Xiupei for knowing exactly where to cut off her sentences. This pause made people think that Feng Tianlan had conspired with the robbers to get the real seal but then fought with them over how to split the loot with the result that they had raped her. This conclusion to the story could be drawn seamlessly from Feng Xiuyu's account, and the seal in her possession would then be considered as stolen from the family.