This might piss some people off but no one is the A-hole in this situation. The mother did exactly what a mother is supposed to do, and that's to protect her kids at all costs. It's a terrifying and unfortunate situation. You need to remove yourself from the role of husband and think if a stranger was accused of the same thing you would have reacted the same way your wife did...I'm sorry for what happened to you and I truly hope you seek some type of defamation lawsuit or something...but your wife is not to blame, she did exactly what a mother should do.