This is only a theory. Something i thought of randomly. Dont really expect kishi to go here. Too dark.
So get this. Saukura and sasuke get married. Sakura wants a child but sasuke says he's leaving and doesn't want a child cuz he won't be around to raise him/her.
Sakura is really pissed about it. She doesn't want him to leave and she doesn't want to wait for whenever he returns to get a child. But she kinda understands his point.
After sasuke leaves sometime later Karin shows up with Sasuke's child from some one night stand a year ago. Sakura simply loses it. After denying her a child sasuke has the audacity to have had a child with someone else.
First scenario is the dark one. Sakura kills karin and about to kill sarada too but can't really do it. After she comes to her senses, she decides to raise sarada.
Second scenario. She's so angry she gets in a fight with karin. Karin who isnt fully recovered from childbirth is too weak to pose a real threat and is unintentionally killed. She raises sarada.
Anyways. Everyday she takes care of sarada, she grows to love her more and it just kills her knowing that she killed her real mum. The guilt is so great it manifests into some actual physical stress that causes her to faint regularly.
So get this. Saukura and sasuke get married. Sakura wants a child but sasuke says he's leaving and doesn't want a child cuz he won't be around to raise him/her.
Sakura is really pissed about it. She doesn't want him to leave and she doesn't want to wait for whenever he returns to get a child. But she kinda understands his point.
After sasuke leaves sometime later Karin shows up with Sasuke's child from some one night stand a year ago. Sakura simply loses it. After denying her a child sasuke has the audacity to have had a child with someone else.
First scenario is the dark one. Sakura kills karin and about to kill sarada too but can't really do it. After she comes to her senses, she decides to raise sarada.
Second scenario. She's so angry she gets in a fight with karin. Karin who isnt fully recovered from childbirth is too weak to pose a real threat and is unintentionally killed. She raises sarada.
Anyways. Everyday she takes care of sarada, she grows to love her more and it just kills her knowing that she killed her real mum. The guilt is so great it manifests into some actual physical stress that causes her to faint regularly.