So years of raising a child, taking care of her in sickness, without your husbands help, and overall being so good that your daughter really love you, were erased because of one moment of weakness when she was provoked and annoyed by questions that she wasn't in position to answer, what with Sasuke's mission being secret and all?
Wow.
Still, that part of Sakura destroying house, frankly, I'd rather say it was just Kishimoto being stupid, because it just didn't mean anything in the end, kinda like when Shin said Sasuke was a shame for Uchiha, even though he himself wasn't real Uchiha.
IMO, I think Kishimoto just needed something to send Sakura in hospital, and not make her a part of Gaiden, and her destroying house was maybe just for the sake of some little hommage of her strength, even though it is weird.
As for Sarada being a good child, sorry, but a child can't be good by default, it just doesn't happen.
Naruto was nice guy because shonen character, but he too did damage when he was a kid, as for Itachi, Fugaku and Mikoto seemed like okay parents to both him and Sasuke; everything else about Itachi being an angel, was just Kishi going over the top, being his fanboy and all.