Apollonia, Michael's Carmela, would have been “dutiful, faithful” the perfect wife for Mafia boss / 'legitimate' Michael

Apollonia “would have fit right in with Michael's family” bonding with Mama and all the other Corleone women, cooking together, maturing beautifully under Mama's guidance, running a loving, caring household, with lots of children

Apollonia would have stuck by Michael, through thick and thin, no matter what – Tahoe shooting, Senate hearing etc.

Michael too would have had it all! with Apollonia as his wife, not dissimilar to Vito