It's been a slow morning so I've been pondering this topic. How about all of Sophia's engagements/marriages? Guido Spirelli, Augustine Bagatelli, Giuseppe Mangiacavallo, the brother she was briefly engaged to when they slept 8 to a bed, etc. I always assumed she married Sal kind of young so I don't know how she would have crammed in all these other relationships unless it was a "The slut is dead, long live the slut," kind of situation.
Rose's education is another one. (Insert snarky comment here.) It's mentioned at least once that she went to college, however she had to take Dorothy's GED class because she never finished high school.