Kishimoto's depiction of the relationship that is SS is one written solely from his limited perspective. It's highly apparent he's never seen a true abusive relationship or was raised seeing a relationship in which the man comes first and that's the way it is.
Having actually been around an abusive relationship I can tell you they are hell to deal with. The abused wife syndrome is a very real thing, and having personally seen a woman who had just been physically attacked immediately defend her husband for said attack is an absolutely jaw dropping, mind numbing and stomach churning thing watch. Logic, even in real life is never found in these kind of relationships. The excuse that was always given was "he's my husband and I love him, I can't help it."
It's not the only one. Financial dependence is a common reason. Abject terror is another.
So from that experience I can say that yes, Sakura deserves some blame for her situation and Sarada pushing her for answers about her father and why her relationship is what it is comes to be expected. No matter how hard she's working for Sarada's sake, a child who feels any kind of neglect is gonna lash out at times. Even against the one who's always been there for them.
Where I break with many in this thread (and side with Pix) is that there is no "domestic" or "relationship" in SS. Sasuke has pushed her away. Constantly. Did he not openly say he was going on his mission of penance back in 699? It's not like his intentions are unknown.
In abusive relationships the violence is generally a mechanism of control. The issue is that the abused party cannot leave and the abuse is why they can't. Sakura is not in a relationship with him and from the way this has started may never have been. The door has always been open for her to say "I'm done." Sasuke would not have beat her, killed her, or whatever to prevent it. He'd probably just have said: "ok."
Hell he has been AWOL for 12 years (why Konoha allows this is a mystery given what he did right before he left for journey number 2). What abuse has been heaping on her while gone? I guess leaving Sarada behind, but at this point we have no idea if he knew and if he did not if anyone bothered to make an effort to tell him. The circumstances surrounding this are unknown. He might deserve complete condemnation over it, I don't know yet If no one told him or even tried, what was he going to return for? The girl he has been rejecting the entire series?
At someone point, doesn't she bare some responsibility to walk away, especially when Sasuke has all but held the door open the entire time?
The author deserves complete condemnation for writing this dreck. Sasuke may yet deserve his own share, depending on what the circumstances are, but Sakura is making voluntary choices and it's not exactly under duress. Exactly what is compelling her to love him besides a crappy author? What's her excuse (besides being a Kishimoto creation anyway)
Sasuke's crap for the way he treats her and everyone else, but Sakura not exactly blameless here.
However, as it's been pointed out, the thing that's lacking is the amount of blame that should be on Sasuke. This is where Kishimoto shows not only his favoritism for the character, but his inability to write on any sort of logical level. In an abusive relationship the brunt of the blame should always lay with the abuser, while only partial blame should lie with the abused for their unwillingness to leave the situation. But as we've all seen the remaining SS pro-ending fans seem to have the same affinity towards Sasuke that Kishi himself has. Therefore they have no issues with defending Sasuke while laying most of the blame with Sakura.
Kishimoto definitely favors him. The Great Sasuke Character Shield will be in force yet again. Yes, the abuser should get all the blame in such a relationship, but SS, right now is not really analogous to the type of relationship people are comparing it to.
I'm not doing this because of any desire to protect Sasuke. I think I've shown a complete willingness to heap blame on everyone. I have no problems criticizing Sasuke, but right now, I can only go with the info that I have.