I checked on the DL thing as well. They cross check those by SSN nationally as well. She is in far bigger trouble than the initial story indicates.
I will go by the assumption that the quiet investigations by Florida just for this is how she got busted. There was another story about an NAACP official in Mississippi who was voting for 10 of her dead relatives.
I know the county here (Duval) has its augmented rules that no more than 50% of the poll workers can be related and that each precinct will have two workers from each party who verify the credentials and addresses of the voters seeking a ballot. The Supervisor of Elections also provides his personal cell number to the poll workers to call him personally if they have a problem or suggestion.
This goes a long way in reducing any potential fraud with oversight inside the beast rather than relying on Poll Watchers who are very limited in their capability for oversight. I know, I was a Poll Watchers for the last three cycles.
In many precincts, there are no poll workers from one of the parties, especially in Baltimore City. Thus, two people who are Democrats simply sign the lines that say "Republican". There are very few Republicans in Baltimore City and many, many precints. Perhaps these are some of the very same precincts where the votes come in well after the polls are closed and most precincts have already reported.