What I remember:
There is a disease that causes children to stop developing physically and mentally. The main character is a youngish child that has been that way for many years, and I think is working as a detective. She(?) is envious of the ones that were frozen in their teens because at least they went through puberty.
And the ones that were frozen as babies get cybernetic enhancements to allow them to function in society. The main character consults one because of the scary amount of computing power it has for hacking and the like.
I don't remember much more. I think it was a short(er) story. I think it was 10-15 years ago that I read it, though it could be as few as 7 years.
I remember the main character being very envious of the older kids because they had matured enough to have physical relationships.
I remember the main character and others being scared of the cyborg baby because of the power it had, and that they knew it was in the area because it was disrupting the power grid around it.