Su Yiqian was about to lose her mind, she had always been more than confident while facing the Empress because she believed that her elder brother, father and second brother were all appointed or were going to be appointed to influential positions because of this she had offended the Empress who came from a small family.
The family of the Empress held high social status in the last dynasty but after the Late Emperor was thrown off, they lost all the favour and became a small family of scholars. The Empress and Emperor were in fact married because of nothing but political reasons but they ended up falling in love with one another.
This was the reason why the Empress could act arrogantly in the harem but the power of the harem had been balancing out because of her family.