Of course! How silly of me. I totally missed the secret code to access part four the first time around! Now I feel dumb. The explanation of how she's actually an original zombie. You know how they have been living and walking among us for years planning the Z-Day apocalypse. Plus, given Saul's resistance, she HAD to have him knock her up so she could have the ultimate zombie baby that would mutate the gene resistant to the zombie-ness and over run everything. IT'S SO OBVIOUS NOW!

On a more interesting note hello neighbor.