MarisaML, I'm so sorry for your situation. I am a mother of two boys and your DES story angers me. Family disagreements/fighting/powerplays etc. are one thing...but DES? Your real focus has to be only on the well-being of your family and NOT give-in to the entangled drama of someone else. OK, so they've created this awful position for you...what to do?
My thought would be to protect myself "from my position". In other words, contact DES, some other related government service, or perhaps a lawyer in a related field of expertise and find out exactly what your rights are in this awful situation. You may want to start by anonymously questioning. Find out how you, on record, can protect your family from this unlawful act. State your facts clearly and precisely, including your outrage and concern for these accusations. Find out, if someone is victimized like this, what is the best plan of action for the family and future. If you need to take voluntary action to protect your position, be open, honest, and confident. Talk to all the right people and do your homework. If nothing else, you will always know in your heart that you did what was needed and didn't just stand alone fearful. When there is nothing to hide, you don't have to hide. Open up and state your "peace"!
Now, having said all that, I want to be very clear that I have no idea how these things work. It is very critical that you do not add increased attention to your situation. Make sure that "waiting it out, or doing nothing except what they want" would not be your best option. Again, I am soooo sorry...my heart goes out to you.
My thoughts and good wishes are for you and your family-- and your comfort. Best, BJ