Hi, I am glad you started this thread as it raises important issues.
I can see where you are coming from but it is misplaced good intentions to speculate out loud about reporting stuff to the authorities that originates from a post.
If MNers start reporting crimes (or even talking about it) every time someone imagines they can identify one then there would be no place on MN for worried/ vulnerable women hoping to gain some perspective on an event without the thought that the next moment someone might be calling the police on their partner in the matter of a purely personal issue whose prosecution, or otherwise, should be down to them and which is often (not always) better dealt with in some way other than through the legal system.
I dunno, it's like people shouting "troll" the minute a post contains unconventional (to MN) views. That also frightens posters away.
Yes, it is trickier if there are children involved but surely it is better to engage the caring parent (the OP, presumably) and help them deal with the issue in RL than to add to their problems by isolating them and worrying them about dealing with potential police questioning and arrest of their partner and all the implications for care orders for their children? It is usually the case that family support provides better outcomes for children than state intervention.
OPs want to sort out their lives or they would not be posting. Few of us are legal experts and the police are more than capable of combing MN for potential crimes if they judge that to be a good use of their resources (doubtful).
I cannot imagine any OP wanting other posters to go to the police on their behalf...perhaps they might end up going themselves, encouraged and enlightened by other posters, but nobody wants these things taken out of their hands.
Rape crisis centres facilitate and encourage women to report assaults but do not take it upon themselves to do so. The Samaritans guarantee anonymity. This is for a reason and we should follow suit.