As you may know, there is an app called Bright Sky which offers help to victims of abuse but that can be disguised as a weather app. From the reviews I’m not sure they have fully solved the ‘duplicitous’ aspect (it is available under Education). However something of this nature is very important so I wish all the devs. luck.
As one further point, there must be people trapped in an abusive relationship who aren’t aware; i.e. that they have been manipulated into believing it is their fault and that nothing bad is being done to them. (I know there are such people from experience).
I don’t feel I have said anything particularly useful but I thought it might set someone thinking.