As Marlina told Seraphina, those who could stay in Ansel's mansion, serve in the Hydral family, besides their loyalty and fanaticism to Ansel, they also shared another common trait.
— That is to recognize their own status.
It's not just about doing their duty and never overstepping, but even if they have fallen into the charm brought by Ansel, they must carry out their duties to the end.
The reason why the maids were surprised and admired Marlina was precisely because she discovered Ansel's cold pursuit of "value" in such a short time — there would be no toys around him, only useful people.
They all hoped to do those things with Ansel, and they would all lose themselves in the process, but no one saw it as their everything, because such weak women, such useless parasites, were not worthy to stay by Hydral's side.
"Seri."