I'm sorry you are in such a horribly painful situation. I'm sorry for your children. I wonder if you have any family who are supportive, like the children's grandparents. You're going to need help to get through this.

I think you did well to talk to a detective. I hope you have a good attorney guiding you through the divorce process. Your wife sounds like a very disturbed woman. She too will need and have a right to legal counsel. Don't try and project what her future will hold. There's no telling how the legal system will deal with her. Let law enforcement be responsible for alerting any victims of her scamming activity. I don't think you should have any further contact with these 3rd parties. You've given info to the police. They'll handle restraining her from further illegal activity.

All of this is going to be very confusing to your 4 children. Keep a level head and try to avoid emotional outbursts around them. It sounds like you and your wife have physically separated. That may lessen some of the emotional chaos. Discuss everything with your attorney, who should be able to offer you basic guidance. If you can afford it, you might benefit from seeing a therapist who specializes in family breakdown.

Don't speak ill of your wife to the children, which it sounds like you are not inclined to do. In the long run they'll respect you more if you speak of her with compassion for whatever breakdown of mind and character that has her gone so far off the rails. You face many tough challenges. Take it one day at a time.