I did think the same with Sylvanas, now before i go further, i want to say that, originally when SL started and the questions of what will happen to Sylvanas came about, i was of those who wanted here to pay, simply because, in term of the “message” you want to give with your narrative, having here simply getting away was very bad message to give, then they came with the “split soul” thing which i found pretty cheap excuse…
Despite all this, well she did get judged, she did somewhat pay, not as much as i wanted, but “still” got something.
For Helya, i agree with you, i dont want to have some kind of validation for her when she is like “ho you see i was right to be a bad person” its just so silly message again to give…
When it comes to redemption for her, i think she could have it, but it must again be done properly, as i said, i think the fact her spirit got twisted could be an idea to explain, not excuse but epxlain why she went so nuts.
It reminds me of some peoples always wondering why she had old god looking necklace, you could maybe say that Loken tricked her into giving her that necklace and it had effect on her maybe, i am just proposing something “easy” .
But yeah, considering how Loken manipulated everyone, he could have just tricked Helya too.