Yeah, this is just the absolute peak of poor execution. The last chapter made everyone hate both Yami and the story, and now they're trying to redeem her by saying oh she's just sad and misunderstood and expect us to sympathize with this? I have to admit it works well as a ragebait though - look...
Now that I read it again, it's not just "wasn't that good", it's complete dogshit. None of the characters are worth giving a shit about. Why did I even read this crap again?
"I feel so bad for her. Now her behaviors are justified completely, and I (who represent all readers) fully empathize with her actions."
- Not a single person in the history of mankind