Well, I've came back from outter space wanting to create a mod which increases the posibilities of emotional deaths to 100%. I've been reading a lot of XML's files, but I can't apparently find something helpful.
Those files include some information. This files tell me another file called S4_E882D22F_00000000_0000000000006551_Emotion_Failure_Idle is the one that causes death, but when I look for information into that file, there is no way to tweak chances.
So, if somebody have worked that, I would be really thankful if he/she told me.
If you noticed, Emotion_Failure_Idle has a set of outcomes: Specifically, the fallback outcome with a weight of 5, then the different death outcomes. Those don't have weights listed, so they default to 1. Try putting a higher weight value on the death outcomes, and see what happens.
...or just remove the line:
...along with the fallback outcome. The sims should die every time emotion_failure_idle is called.