Sharing in safety

People: I got a couple of questions. Feedback is welcome.
Who is in charge of your personal stories when it comes to abf/ anr? Who gets to decide who its shared with?
You yourself? Ok. You should be, I guess.

Couple of scenario’s:
A. You share with an individual and he/she doenst keep it to himself/herself but shares it in a group w8thout asking. What to do? And what if its not incidental but structural?
B. You share a personal story in a small group. What if soemeone shares it in another group? What if it isnr 8ncidental but structural? And what is you all agreed on whats 8n here stays in here and it simply doesnt? Or it gets put in the chatroom?

Of course: not sharing is an option. The only one if you want to be sure you get to decide who knows what about you. But what about community? Not sharing anything means no community. So, isnt there a responsibility to be careful with what we tell about someone else? How about consent? Or at least make sure everybody understands the conversation is not confidential?