It won't be her, she'll have her chance but again won't be able to do it. It's somebody else and their name is.....
I'm not telling
You're gonna have to watch to find out.....LOL!
Do you have a spoiler or just a good guess?
Even the Apocalypse could not keep me from watching!!!!
Other possibilities-
Michonne - but she did already get to stick him once.
Maggie - just an all around exceptionally attractive bad ass lady.
Wet Nurse - whose name i can’t recall- she did handle Merle with her pistol prowess.
Carol - she needs more notches on her kill stick.
Merle - assassin when he needs to be.
or watch it could be the gov’s advisor he does him in :D