Uho. I see some of Sasuke's "react violently to bad news" genes got passed down. I may not be able to understand because who my parents are has never been in debate, but is it really that traumatic to find out that the woman who has been caring for you all your life isn't your mother, but still worth saving? Like, what in the world?
Even if Suigetsu did mess it up, I'm a little startled at Sarada's reaction. So what if she is not your mother, was still was a caretaker of sorts.