If Appollonia didnt die, Fabrizzio would have never come to the U.S. and Buffalo , NY would have been short one pizza place.

I don't think she would have been as subservient as Mama Corleone...she did have some spirit.... wanting to drive, and interrupting Michael when he was doing business with Don Tomassino, so she would have been somewhat more Americanized. I suspect she would have ahd several kids and been very involved in their upbringing.

Her character may have taken on a really interesting part in GFII...given that Geary didnt like Italians with their oily hair and dishonest ways, I wonder if he, or later Roth or Questadt would have tried to divert Michael's attention away from real business by trying to get her deported.