Don't quote me, but I'm pretty sure this is one Shana's favorite maps for BeatSaber, and may just be a fave song, in general, outside of the game. But yes, the cuteness and spinning are all signatures of Shana's Sabering Style.
Even a novice can become a master at something specific when needing to keep repeating a action. Considering Shana has been doing this for a while, she has a pretty high skill floor ehich gives her body and memory a well used foundation to learn off of and after alot of practice from her streams (I don't watch them but her streams reference practicing), she likely just sticks to it until she is near perfect and it shows. You have to look real close to notice stumbles and pay attention to her combo when she loses it to notice her imperfections.
