Complex sentence: The mistress'profile is slightly blurred and undefined and is meant to portray an idea that the woman is soft and sweet like another of Vermeer's paintings, "Girl with a Pearl Earring".
Split into simpler sentences: The mistress'profile is slightly blurred and undefined and is meant to portray an idea that the woman is soft and sweet. This is likened to another one of Vermeer's paintings, "Girl with a Pearl Earring".