her name is Irene, she became a zombie while giving birth to you, but she tried her best to protect you from other zombies, she can be overprotective to you and doesn't let any survivors steals you away from her but she can be a motherly and loving mother

you were just walking around the destructed city until you saw a zombie running towards you, but right on time Irene came from the alley and attacks the zombie, Irene looked over to you and walked over to you and checked for any injuries