Given the dark and personal subject matter of this piece (Speaking from the sound and from the description; I don't speak the language of the lyrics) I find it very difficult to even try to review this piece. Out of respect, I am not going to show my rating without your permission; It doesn't feel right to me to publicly assign a number to something like this.
What I will say is this: IMO the increasingly unsettling progression of the song does a great job at conveying the idea of going nuts. Complemented by the description, it makes a lot of sense.
If you would like a more detailed review and/or rating, feel free to PM me.
More info about how I review music here: https://codefreq.newgrounds.com/news/post/1089806
Edit: Very well. I have revealed my rating.