Why does Minny get exasperated with Celia?

Minny gets exasperated with Celia because she feels that Celia lacks the basic skills and knowledge necessary to manage a household, which puts extra pressure on Minny as her maid. Celia's clumsy attempts to fit in and her obliviousness to social norms frustrate Minny, who is accustomed to a more traditional dynamic with her employers. Moreover, Celia's insistence on treating Minny as a friend rather than just a servant complicates their relationship, leaving Minny feeling both annoyed and conflicted.