Carl and Sophia are indeed deceased in The Walking Dead comics. Their fates were determined by the story's progression and the challenges the characters faced in that post-apocalyptic world.
Sorry to say, Sophia isn't alive. The plot and circumstances in the comic didn't allow for her to continue. It's a harsh but integral part of the comic's narrative.
The comics of The Walking dead are full of intense survival scenarios and character developments. There are constant battles against zombies and internal conflicts among the survivors.
The Walking Dead comics feature a complex web of storylines. There's the constant threat of the undead, groups forming and breaking apart, and characters evolving in their fight for survival. It's a gritty and intense read.
Sophia's age in the comics isn't explicitly stated. But based on the story progression and her appearance, she seemed to be in her early teens, maybe around 11 or 12.