Yuuka is still tsundere, so she's still at odds with her inner sadist. This was just her realizing that she's in love with Moe. And Moe realizing that Yuuka is in love with her.
I predict more tsundere and more... Moe before Yuuka admits to herself that she's just as much a pervert as Moe is and embraces her inner Sadist.
Also hoping for several more chapters because I cannot get enough of this manga. <3