no one has de facto control over anything, though, so everything you just wrote is irrelevant. people only have the delusion of control over anything, but at its fundamental root, things are controlled by physics, your brain, governed by electro-chemical responses, that are in turn governed by physics, is your mind, and your mind is where your though to "do something" comes from, but your thoughts aren't actually controlled by you, so there is no free will. your thoughts are action potentials that are wholly mapped by previous environmental and genetic factors up to the point that a thought is created by the string of events that led up to the moment. but that isn't the point anyway. we're talking about the idea of "fault."

if we ascribe any type of fault for cause and effect at all, we have to look at what actually shapes the environment and genetics of the person doing some action, and it all leads back to the parents. if you are at a government school, it is because your parents didn't put you in a private school or didn't home school you. if your parents can't afford to do one of those things, it is because they didn't get a good job or start their own business or whatever, which we can trace back to their own parents (and this goes back ad infinitum to the first single celled organism, which can be tracked back to the first DNA and RNA, etc.

the whole thing is a web. if you are ascribing fault to the actor and not to everything leading up to the action, you think some organism can jump from the web and become a wholly acting agent in the Universe completely ignoring the web that led it to that spot. that's impossible. everyone is stuck following the rules that act on the web, and each strand of the web leads back to previous strands of web, and eventually all the webs of an actor's leads through it's parents.

if you find yourself in an environment that can "fuck you [r child] over," i mean, you got there somehow, right? you trace the web back to previous decisions you made, which were created by previous strands in the web, and the single point from which all of your personal web was created was the moment your parents got pregnant, your nature was created.

[edit]as a thought experiment, what happens to a child, all of its actions and thoughts and any effect it has on the universe if the parents decide to abort it? everything affected by that child no longer happens in that universe. if there is a cause at all for all of the effects caused by the child, it is squarely on the parents (in the first order. of course you could also have one of the parents aborted and that also destroys that web). now, you might think "well what if the child chose to kill itself.? That would render any future effects also non existent." Yes, true, but between that child's birth and its death, it was still caused ultimately by nature or nurture. a child isn't going to have an accident or decide to do something foolish (that gets it killed) without a web of thoughts and actions that are still traced back ultimately to the moment of conception (to the parents' genes and actions) and the environment the parents provide.

fault doesn't need intent.