I feel sorry for her but I also feel rather worried about the way that a mother killing a disabled child, is
always framed as to be about the sufferings of the mother.
The personhood of the child is eroded and he is only presented in this story as a series of noises and troublesome behaviours that tipped his mother over the edge and as then object of her attention. We don't learn anything about Dylan, there is no sense of loss that he is gone from the world.
It's not just this story, it's also the fact that the journalist chooses to situate the telling in a common narrative that is all about the NT person and not at all about the SN person. Every time you join that line, you are feeding into a perception that SN lives don't matter at all.
Yes, I feel sorry for the mother. But it would have been possible to write the story differently while still showing sympathy for her plight. "This is who Dylan was, sadly his mother killed him during a psychotic episode brought on/exacerbated by stress and lack of support during lockdown".