Just got back home and catching up. Sorry to hear about the little roller coaster ride you took but sounds like you only went around once. Good for you!
I would agree with Silva. You've said all that before, I don't see the point in sending the email.
Keep living your life with your kids on your terms and let your W sort out her own mess.
If you love somebody, set them free. http://tinyurl.com/2empx2g