if a victim confides in you, do you have the right to go against that person's wishes and tell the police
From a professional POV (and what has to be my personal because i am a member of a regulating body), you break confidence if;
You have reason to suspect that a further crime will take place.
The person who is telling you what has happened is vulnerable and you may need to take the decision for them to contact the police.
So if a child comes to you, you tell someone, if an adult does and the crime was committed when that person was a child, then you break confidentiality.
This is to protect those that need it most and allow autonomy in adults, unless it puts another vulnerable (child) person at risk.
In law, if you witness a crime and do not report, you can be charged as an accessory.
Ethically, you are wrong and cannot justify doing nothing, even if you just have suspisions.
It is a tough one, because women who stay with DV perpetrators could be said to be as guilty as the person committing the abuse.
When carrying out assessments, the adults safeguarding ability is looked at.