Once again I come to you to fulfill my role as pedantic autist posting diatribes on what is proven beyond reasonable doubt and what isn't:
I rate this as likely as the estrogen incident. Bella is a chronic liar, we know this. What we have currently are only messages between her and her friends that could be construed as edgy LARP. However, it is important to note that the first leak of this had concrete plans in them
how to get CWC to kill himself (someone post that one please I can't find it). It wasn't very detailed though. And Allen
says in these logs "I thought the plan was to get him to kill himself", pointing towards some shared plan.
Personally I believe it. But unless more detailed plan-making comes out and is cross-referenced with how she interacted with CWC I wouldn't say it's conclusively proven. Thank you, please resume ragesperging now.