First, I'd like to say that I agree with the others, that you should GAL(vigorous exercise does wonders - inside and out). Also, try to focus on your boys, they're hurting too. Perhaps you can try to find ways to have fun with them and take your minds off the pain (way easier said than done, I know).
Second (ready the 2x4s), I agree that your husband will definitely not appreciate you informing him of the OW's intent to "make you and your children a distant memory" in your husband's mind. HOWEVER, somewhere deep inside your "alien" resides a father, and I don't think that father would appreciate OW trying to separate him from his children. IMO he needs to know about this aspect of her personality, and the sacrifices she expects him to make for their r (small case intended). That said - I don't think you should be the one that gives him that information. Uh - this is pretty devious, but do you think he could find the printout accidentally? Even if he dismisses the information, or gets angry at you for contacting her, the seed will be planted. It just might grow to be the reason that he leaves her narcissistic butt. At the very least, he'll certainly have to work very hard to overlook any effort she makes to separate him and the boys.
I'll keep you and your boys in my thoughts and prayers. ((((hugs))))