I feel as though this is a part of the problem though. If Tia, and other children like Tia, are only destined to go on to lead a terrible life, then there is no point in trying to make a difference. If that is the sum of her value, then what is the point of looking for her if she goes missing, or trying to find the person responsible for her death? What is the point of a care system? Why bother trying to help any child in trouble? And further to this, when kids in care hear sentiments like this (as unfortunately they very often do) it only reinforces to them that they are not valued and should never bother trying for something more.
I have known many children in Tia's situation, and these children are amazing children, courageous children, beautiful children, children with dreams, children who somehow manage to survive all of the awful things that happen to them. Of course, they don't have it fair -- they are "labelled", they lose over and over, they carry the scars of their abuse forever. Now some of them will go on to function well in adult life. Some won't. But Tia will never find out, because someone stole that from her. She'll never get her chance. Her last moments were probably ones of pain and terror. There are no positives for Tia.
I understand what you are mean and empathise with it. I think we can all feel helpless. But there are a lot of things people can do. Become a foster carer. Join a program that supports at risk children. Teach your own children to be kind and accepting to their peers who are "different". Speak up when foster children are labelled as "feral". Help that struggling mum down the street. Report child abuse and domestic violence to authorities. They aren't any answers on how to stop children being abused and therefore not having the baggage in the first place, but what I take away from it is this: children in foster care go missing every day, with no public outrage, fear, effort, or condemnation. It is as though Tia mattered less because she was in foster care and the community expects that Tia and children like her will always be at risk. But Tia shouldn't matter less to us for being in care. She should matter more.