Is Sakura, Sarada's biological mother?


In the new manga mini-series, Sarada figures out the girl in glasses with
Sasuke to whom Sarada seems to look like (the glasses, the face). I was
wondering if maybe Sakura isn't her biological mother and that Sarada is a
child of Sasuke and the other girl in picture.




Everything in this answer takes place after Shippuden ends and should be
considered a spoiler.

* * *

In [Naruto Gaiden: The Seventh Hokage and the Scarlet
Spring](http://naruto.wikia.com/wiki/Naruto_Gaiden:_The_Seventh_Hokage_and_the_Scarlet_Spring)
Sarada is unsure of who her real mother is after finding a picture of Sasuke
with Karin. Since Sarada had never meet her father she follows Naruto to meet
Sasuke and find out the truth about her biological mother. When she meets
Sasuke he says that its nothing to do with her and leaves it at that.

[![Naruto Gaiden: Manga
image](https://i.stack.imgur.com/yhMhC.jpg)](https://i.stack.imgur.com/yhMhC.jpg)

Later in Orochimaru's hideout Sarada ask Suigetsu about Karin to see if she
was there in the hideout or if he knew who her real mother is. Suigetsu did
know the answer but remembered that Karin had an umbilical cord in her desk.
Suigetsu thought it was from Karin's birth. He then did a mouth swab on Sarada
and preformed a DNA test. The test was a positive match. This leave Sarada to
think that Karin is he biological mother.

[![Naruto Gaiden: Manga
image](https://i.stack.imgur.com/eN1Y1.jpg)](https://i.stack.imgur.com/eN1Y1.jpg)

It is later revealed that Karin could not be Sarada's mother because she was
the one who delivered her. Karin tells Suigetsui that the umbilical cord he
tested was Sakura's and that she was Saradas biological mother.

[![Naruto Gaiden: Manga
image](https://i.stack.imgur.com/jdN99.jpg)](https://i.stack.imgur.com/jdN99.jpg)

