I'm sorry you find yourself to be in such a difficult situation. I don't know if this can be of any help, but here are links to 5 articles, from PC's archives, that talk about how to prepare for & have difficult conversations:

5 Ways to Prepare for a Difficult Conversation

How to Have Difficult Conversations

3 Tips for Better Communication During Difficult Conversations

Uncomfortable Conversations: How to Overcome Awkward Moments | Anger Management

How to Avoid Responding Defensively During a Challenging Conversation | Anger Management

My best wishes to you...