Here's a better ending: Everyone learns how to take care of their own problems without depending on, and pushing their dramas onto their acquaintances. Taking responsibility for their words, actions and getting some agency is how these characters will really get out of this spiral.
@Beatrice
The majority of the these people are suffering from mental illnesses/problems (depression, anxiety, delusional suicidal, etc). If you know anything about mental illnesses, you know you just can't toughing it out and deal with it all by yourself for "personal growth". When you're rock bottom like so many of these characters, wagging your finger and saying take "responsibility" or "agency" is both counterintuitive and toxic. Of course we want people to take responsibility and have agency, but when you're suicidal or have depression it's incredible difficult and for most impossible to help themselves let alone ask others for help.
This is why it's important to extend your hand to people who suffer these mental illnesses and give understanding, compassion and support. These people require medical, family, and friend support in order for them be able have the will to live, let alone to care and take "responsibility" of their life. If you have ever know anyone or personal suffer from mental illnesses, you know it's something you can't fix yourself and require the support and help from others.
Chako is extend her hand and asking for help. Reaching back to that hand is the first step in getting better for both her and the MC. Recovery is not a road of solitude as you might think.
Also, "dramas" is not the same as mental illnesses FYI (I don't think you were trying to say that but just in case)