That thing of saying the adult girl doesn't have the same responsibility as the parent to protect the children, contradicts what a previous poster posted about an 18 year old boy/ man who was jailed for not reporting his mother's abuse of his brother.
That troubles me, because that 18 year old was probably also a victim of his mother's abuse and subject to exactly the same psychological (and physical) barriers to reporting that the mother/ sister was (As an 18 year old, he'd have homelessness to look forward to, wouldn't he, not support). If the abuse had been uncovered 6 months previously, he would have been recognised as a fellow victim, not tried as a co-abuser.
Obviously we can't have people sitting by and watching kids being abused and doing nothing about it. But in the absence of any real, robust support for vulnerable people who somehow manage to report, the use of the criminal justice system to deal with these very vulnerable people, seems wrong to me.
I think the basic problem is that much of institutional thinking and practice around these issues are very black and white - you're either a victim or an abuser and need to be dealt with depending on which box you fit. When in reality we all know that victims can also be enablers, facilitators, co-abusers etc. Our systems don't seem flexible enough to deal with that.