Stop. Stop analyzing. Stop talking. Stop DOING anything. What are you gaining from this? Anything at all? Focus on you, focus on your kids. GAL. That's it!
If you want to reconcile the M, nothing but the above will help. If you're done with the M, nothing but the above will help. You say that "I thought I was done so I let her have it!" Did that make you feel any better? (for more than ten minutes?) Is it worth it to antagonize someone has ALREADY FILED FALSE POLICE REPORTS?
Detach. It's imperative for your own mental and emotional health.