C44 Unwillingness

Why? Why could Su Baihee have an instructor mama by herself, and the three of them had to share an instructor mama?

Although the three of them present also had some means, how could the expression in their eyes escape Mammy Cui and Mammy Hua, who were as smart as humans?

"The two mama have had a hard time along the way, go and rest early. " Mrs. Min said to Mammy Cui and Mammy Hua