I agree with all of trisher's posts on this thread. If there were more money, and more time allocated to each client then of course there would be more opportunities for social workers (and police) to be persistent and insist on seeing the child even if they had to be taken to her elsewhere. If more resources were available, then inexperienced social workers wouldn't be dealing with cases like this alone, and managers wouldn't be worrying about losing their jobs because of cuts. Social work managers and senior social workers are 'time-served' themselves, incidentally. They are not 'pen pushers' as some seem to assume.
What I don't understand in either this case or that of Arthur is why the 'carers' kept the children with them - both of them had loving relatives who would, presumably, have taken them in, even temporarily until new homes could be found. The only explanation I can come up with is that they were so sadistic that they enjoyed the abuse, which doesn't bear thinking about. Neither seems to be a case of 'carers' who just couldn't cope, or who were simply inadequate, though - there is nothing remotely understandable about either situation.
It's utterly heartbreaking.