mafias biggest regret

Ami Russio - eldest daughter of Matteo Russo, Italian mafia don.
She just wants to live a normal life like every other girl her age, travel the world, go to clubs, get a boyfriend and have sleepovers. But no, she's forced to marry Giovani Lyons - don of the Sicilian mafia.
Things all seem smooth, until somebody shed say was close to her makes the biggest regret of their life.
But do they?