When Josie mentions expecting to tap into her “Italian emotion” and scream at Michael, it explains why she leans so heavily on drama and yelling in her relationships with Mama and Nonna. To her, being emotionally expressive is part of being Italian. Just as Mama’s loyalty to Josie was evident earlier, here Josie makes it clear that her loyalty is to Mama above all else. Michael not giving her dimples might be offensive, but abandoning Mama is unforgivable.