Madam Qie 2.0 was a certified professional scammer who earned a living from it. She scammed her way into another woman's family by making herself into a fragile victim. One would ask what kind of idiot will fall for her tricks? The secret was in her fragile-looking porcelain face.
Whether her face was natural or plastic it didn't matter because the effect was the same regardless. All she had to do was act coquettish, put on an aggrieved look or pout her lips with reddened eyes and the doors will open for her.
Her face though wasn't her ultimate weapon. It was what was between her legs that sealed the deal with Master Qie. She didn't have feelings for him or anything like that.
He was just a means to an end for her and when he failed to save her son she decided to take matters into her own hands. This is why she made a pathetic attempt to get the woman she kicked off this seat to help her.