She started sleeping with Tyrese at the prison, until Michonne showed up and Tyrese dumped her for the black lady. Carol tried to rebound by suggesting a menage a trois lifestyle to both Rick & Lori, separately. When the Grimes family reacted in a very sane, sensible and un-WoT way by recoiling in appalled disgust from her, she seduced Herschel's virginal son for a final sexual encounter then walked out into a crowd of zombies with a smile on her face, and dialogue that implied at least THEY wouldn't reject her. It's worth noting that Sophia was still alive in the comics.