One, that doesn't make the battle a stomp, merely decisive. Reading minds doesn't mean Yuri loses her tools, only that they become less effective.
Two, Yuri can literally leave the mist with a singular leap without even thinking about it. She leapt for kilometers in the air to escape from Karaka's world of darkness, I don't see why she wouldn't do the same to Amamiya. The only difference here is that Amamiya would likely pursue her, unlike Karaka.
Three, I'm genuinely unsure about the threads. But Amamiya needs to be within a few meters distance to use them, but typically prefers to use them close up.
In her nova form, she prefers to use her scythe manipulation, and her alternate personality, abyss, as opposed to her other mind based abilities with the exception of trance smoke.
As for her insanity scythe, it isn't her go to, but she'd be intelligent enough to pull it out once she sees what kind of fighter Yuri is.
Simply because Yuri's advantages are somewhat less so because of mind reading, once again, doesn't make it a stomp. Yuri still has access to transmutation, range, and AoE. Keep in mind that many of her attacks, namely her nuclear punch, have the capacity to blow her opponents back hundreds upon hundreds of meters, yet keeping them well within her range.
It seems like you're coming up with a strategy for why Yuri would win, which is fine. But you're not even pondering the fact that she could fairly lose, instead calling stomp merely because Yuri can't prevent her mind from being read. Like that stopped her against Karaka if the guy was actually reading her mind, which, granted, I don't think he was. (Actually, where was it stated that he could do that).
It's not like Yuri can't win here, it's just not as simple as she can just punch Sakurako away. It'll merely take more ingenuity on Yuri's part. How that factors into her character is up to SIU and us as interpreters of said character, but Yuri has plenty of tools, as does Amamiya. It certainly shouldn't be a stomp because of mind reading when Yuri has superior range, AoE, and durability, and speed is equalized. That just doesn't make sense. Knowing of an attack, if it has great enough AoE, doesn't mean once can dodge it. I've thought about this match quite a bit before making it. It's not a stomp, it just requires more depth if you're going to support a victory for Yuri.