And when Sakura display those things for him he's fainted, like the bridge scene, and even the confession were Sai suddenly pulls off that she's doing that because she loves Sasuke.
And with Sakura is her innability to perceive that Sasuke is not the type for her, the "thank you" was mere a illusion she thinks that deep inside there's a "nice" and "warm" Sasuke, it's like the thank you was a display that Sasuke's cold attitude is just a shield that inside he's a nice guy like Naruto.
It's all based on wishfull thinking, she thinks that someday he might change and became a nice guy and affective but what she doesnt realized is that she's not the girl and that Sasuke has his own team and there's other girls that also want his affection and love him for the same reasons as her, that someday he might return to team 7 and they could be like that again, but what she didnt realized is that the old days would never come back because Sasuke has his own "team 7".
I'm iffy on your post. I agree with some parts, and I don't with others given it's never stated or shown. I don't think Naruto hates the way Sasuke treats Sakura for one. I also disagree on the thank you. If you feel she's holding on to this, why not think she's holding on to what was at the bench scene then? I'm just curious.