I’m going to defend her and say, here....
she’s telling her story.... which means what she may not have voiced in public she’s voicing here.
In front of the child and in front of her ex may be a totally different story.
...it’s quite simple really...
You said you never complained...but in fact, that is what you were doing.
It wasn’t a mere relating fo facts, it was a comparison of what you percievd was an injustice.
The courts are available for you to receive fair support. But as it is posted, it sounds as though that eith has not been pursued, or has been pursued but the courts found that you were receiving just compensation, or there is more to the story than what you are telling. Seems rather odd that the courts have decided that $100 is suitable child support for you.