the internet is deluged by news stories so please be careful with what you read about this. reports from the victim (girl)'s mother indicate the alleged killer was 2 years older than, and not friends with, the victim. it sounds like rivalry to me.
I don't think any of the folks who responded are; it's mostly angry noise from people who need to share an opinion but haven't researched any current events sufficiently to provide one. It's what I call "dogpiling" where they jump into a discussion which starts with critique even if they don't agree with (or understand) it because the act of sharing their opinion is more important than learning anything. Your comment is similar, but I'm sure you can see that now. :)
Anyway, I won't waste any more time educating you folks. My point is the first sentence of my original comment. If reading comprehension is the issue here maybe you could reach out to your educational institution for a refund, assuming you paid for it.
You've neatly demonstrated exactly what I was talking about; dogpiling, lack of understanding about the issue, and a need to share an opinion without contributing anything to the discussion or your inadequate education. I'm sorry but I'm out of volunteer hours and you can't afford my rate. Have a day. 🫱