The source of Cozy's evil

So now Cozy and Trixie have just had breakfast in my story and Cozy is about to talk to Trixie about why she did what she did. What brought her to that point. I mean, normal healthy ponies do not do what she did right? I also know that in reality, this is really just me explaining why I tried to kill myself using thinly veiled metaphors. Okay so I suppose the next logical step would be for Cozy to ask Trixie what she should be doing instead? Well I did just note in the story that Trixie is acting as a "parental guide" at this point and so that would be a good place to bring it to. I gotta add that things move a bit faster with me brainstorming and writing side by side now, although progress is still pretty slow as there's no shortage of "mine fields" in this new chapter. There's a lot of complicated questions that have no easy answer.