If your argument is that this regulation is fine as long as all other regulations are infallibly drafted and implemented, that only works until the other regulations are fallibly drafted and implemented. But fallible regulations are the rule rather than the exception.
Battered spouses frequently run away without notifying authorities, because leaving gets them out of the situation whereas contacting authorities extends and inflames the conflict.
And, because everything is a trade off, if you pass a law which is highly protective of victims then the abuser can file a false abuse complaint against the victim, then kidnap the children and deny the victim all access to their children until the fraudulent abuse complaint is dismissed.
Battered spouses frequently run away without notifying authorities, because leaving gets them out of the situation whereas contacting authorities extends and inflames the conflict.
And, because everything is a trade off, if you pass a law which is highly protective of victims then the abuser can file a false abuse complaint against the victim, then kidnap the children and deny the victim all access to their children until the fraudulent abuse complaint is dismissed.