Its becoming increasingly apparent that mikako is the only one that doesnt understand the other 2, kaito understands yuki wants to be yuki and not yoshiko and yuki understands kaito wants to be a woman, thats why she uses "she" when referring to her
Im really tired of since the beginning Mikako just do as she please unpunished. Was a moving scene thinking was probably her 1st decent meal at home with other people in ages. But that erase who she become in the slightlest.