I wouldn't say anything to the OW. She is no friend of yours. All you're coming off as is a hurting, betrayed wife. Nothing more. She has NO morals or values or she would have never involved herself with a M man! No need to preach to her about that. Show her you're the better woman by dealing with your H directly and putting boundaries, with consequences, in place. She'll get hers.. I promise you that.
There were many times I wanted to do the same. the only time I EVER wrote and said anything to the OW, was in response (which is no better) to her reaching out to me.
Hugssssss
M: 32 H: 34 S:5 D: 3 D: 1 Together 11 years Married 7 Bomb: PA/EA 8/13/09 (for 1 year on and off) ILYBINILWY: 08/09
"The end of suffering happens with the end of wanting." -Laura Munson