Make sure she gets the idea that someone is gonna kill her and that you can help her escape.
https://steamcommunity.com/app/205100/discussions/0/828925849275301936/?l=french
Let’s get one thing straight. I’m the boss and I tell you what to do.
https://idioms.thefreedictionary.com/get+right
Take sb through sth
explain something to someone:
This helpful guide will take you through the application procedure.
Walk someone through something
slowly and carefully explain something to someone or show someone how to do something:
He'll walk you through the procedure.
Bring something home (to someone)
to make someone understand something much more clearly than they did before, especially something unpleasant:
When I saw for myself the damage that had been caused, that really brought home to me the scale of the disaster.
https://dictionary.cambridge.org/