Lori Grimes does not come back as a zombie in The Walking Dead. The scene you mentioned from the “Home” episode is actually a hallucination or vision that Rick experiences. It is a manifestation of Rick’s guilt and grief over Lori’s death.
In the scene, Rick is on the bridge just outside the prison, and he sees a vision of Lori wearing a white dress. This vision of Lori serves as a reminder of the pain and loss that Rick is feeling. It is a haunting and emotional moment for him, but it is not meant to suggest that Lori has actually returned as a zombie.
Throughout the series, characters often experience hallucinations or visions of deceased loved ones. These visions serve as a way for the characters to process their emotions and come to terms with their losses. In this particular scene, Lori’s vision represents Rick’s struggle to move on and find a sense of peace amidst the chaos of the zombie apocalypse.
It’s worth noting that Lori’s death occurs in Season 3 of The Walking Dead when she sacrifices herself to save her unborn child. After her death, her body is not seen reanimating as a zombie, and there are no instances of her returning in any form as a walker.
The scene you mentioned with Lori’s vision in the white dress is a poignant and powerful moment in the show, but it does not indicate that Lori comes back as a zombie.