The detail that explains that Esperanza must change- Miguel says she only knows how to give orders to servants.
Explanation:
Esperanza has never done any household work.She has only seen Hortensia sweeping and now she is trying to recall.She doesn't even know how to hold a broom stick .
At this sight Miguel gets angry and takes the broom and the dustpan from Esperanza(she wants to cry but she holds her emotions as she does not want to cry in front of Miguel) and then he says to her that its not her fault as she has always given order to her servants and have never done any household work by herself
Thus the answer is
The detail that explains that Esperanza must change- Miguel says she only knows how to give orders to servants.
