Up until this point, Emily has assumed that, while Madame Montoni was selfish, it was ultimately Montoni himself who was trying to manipulate her in to marrying Count Morano. Annette, however, reveals that Madame Montoni—Emily’s own aunt—was the one trying to force the marriage. This makes it even clearer that Madame Montoni doesn’t have Emily’s best interests in mind, but Emily remains so loyal that she doesn’t want to hear bad things about her aunt, even if they’re true.