Thanks for this chapter, Blutoons.
"bUt ShE dIdN't AcTuAlLy KiLl hIm!!!11!"
So we should pardon Charles Manson in that case, right? Cause he didn't actually kill anyone, he just manipulated people into doing the killings. If you say "well that's not the same thing", you are being willfully hypocritical. The only way to excuse Aisu is if future chapters clarify on the events leading up to Toma's death and do show that she had no intention of being a party crusher, that his "friends" did everything of their own free will. But as of this chapter, with the context that we have, we can safely assume that she manipulated his "friends" which caused his death. Just like how Manson manipulated people that caused deaths.
This is what gets me about the focus on the fact that Shorthair didn't kill Toma: no, it wasn't
her hands that sent him to this next world--it was the hands of someone who evidently believed he had
something with Shorthair. To put it simply, she might have gotten involved with Toma, but she did nothing to stop the affections of Toma's friends and thereby
at least lessen their attention. She was apparently a popular girl who was in love with the validation she was getting--too much so to get rid of it once she settled down.
Indeed, the only way to excuse her is what you said. However, my perspective diverges here: her actions already
completely lack any kind of positive regard or sympathy you'd think she'd have for someone she didn't always think ill of--everything she's said here is after her having sent three people Toma's way to ruin his life.
The worst thing about this is that this manga, though it started off with a novel (as far as I'm aware, anyway) idea, is devolving into the usual garbage via its MC: Toma has available to him the affection of at least one pretty girl and the attention of another who's stuck between tsuntsun and deredere--and has just vowed to avoid all women in order to redeem, specifically, a psychopathic shorthair...
...because he believes in the power of
friendship.