@NARKist I get what you are saying, but i don't believe that they are this naif. No matter what, our MC mother is the wife. If she have no power in the court then maybe, but from the few chapter we have seen, she still have some power in the estate even if not shown blantantly. Not only that, there is also prince Yun who backed her. Isn't that the reason why even though she is not favored, nothing big is happening to MC Mother? And isn't that also the reason why this concubine mei went to ransack the place when the mother were out? She could silence the maid but not the mom.
The very fact that they are againts each other but still giving something for her opponent to exploit is just... Did she thinks that she could just clean it up by saying "That maid tried to steal the statue and i was trying to prevent it when this child tried to kill me instead"? Unless the Prince also an Idiot or decide to choose sides, i doubt she could get out of this without a scratch. Especially since previously, the maid said that the MC mother is with the Old Madam. What would happen if the Old Madam decide to follow to know what happen? Will she said that "The statue is my gift to the old madam, but she decide to send her maid to steal from the estate so she could gift it to Old Madam"?
... Wait, that might be to smart to say for her.
All in all, i still think that leaving the maid to call the madam while bringing the statue is just too idiotic of a move for someone who are ment to prevent the Lin Estate to side with Yong Ning, The MC Mother. ... But then again, this "Concubine Mei" is a former prostitute who got recruited to just do that, nothing more...
P.S. Sorry for the wall of text.