"I’d like to think that if Sasuke really has been gone for about a decade, Sakura would’ve somehow sent him photos of Sarada growing up over the years, and he would’ve kept them all." -Loopsee (Tumblr)
Please don't fight whether Sarada is Karin's daughter or Sakura's. It's already been confirmed by interviews, captions, and Kishi himself that Sarada is Sakura's daughter. It's alright if you ship SasuKarin, that's you opinion, but please don't fight with each other.