[tyingq]

This story, if true, does seem to point to some complicity: http://www.thestar.com.my/news/nation/2017/02/18/killer-wome...

Mentions being recruited months ago, and practice sessions that included injecting the victim. I don't know that a reasonable person would conclude that an injection was a normal thing to do in a prank.

Of course, news is often misreported, so yeah...innocent until proven guilty. But people will speculate, and there are some things that feel fishy.