Helena was pretty much my favourite character, really unhappy about the way this chapter went.
Not only because they killed her off, but also because of the timeskip, building up an enjoyable character and relationship over the last few volumes only to have her break up with Elijah offscreen, I was still trying to adjust to this frustrating development when BAM, she's gone.
I mean I get it, you're willing to casually kill off characters. I didn't need another demonstration of this, especially not with Helena as the example.