Just... no.
The Walking Dead Fan Petition To Bring Back Beth Gains Steam | Comicbook.com
She was killed with a very clear headshot. Other beloved characters have died and not come back. Let it go.
It's just about possible that the bullet missed the vital parts, but...if she came back it'd have to be as a) a zed, or b) a bed- or wheelchair-bound character with catastrophic brain damage, who can do and say nothing and can't even wipe her own arse, with that presumably being the case ad infinitum. Not sure would either scenario would add, apart from a drag. You just don't take a round through the bonce and get straight back up singing and dancing and being just how you were.
In any case, I agree: these peeps should let it go.