You know, when I first read this (way back when the Onsen arc was new), and then along with all the updates, I was kind of on Uta's side.
But I just re-read the whole manga, and man, she is such a selfish child.
Cutting someone you love out of your life completely (which is what I infer by the use of the black word balloon Ch. 25, Pg 27), someone who clearly loves you back, just not in the same way, someone whom you admit brings you joy and happiness because, what, because it hurts that you can't have more?
Which I understand this is the point. I just hope we'll see some actual growth out of her character arc, and soon.
Also interesting as a personal note that I didn't pick this up in an initial reading.
I am excited to see Kaoru's growth as well.