Just thought I would check your thread! I know what you mean. My H stayed in the same house with me from Sept. 6th thru Feb. 2nd. The OW was in another state but I was nosy & knew when he would go & see her. He would leave early & tell me he had an inspection at work or that he was going to his home town. So many lies & I knew it & didn't say a word to him. He spent 2 weeks at Xmas with her & came in just like nothing had happened. It got really tense around here especially with all the legal stuff going on.
I think you are doing a great job GAL!! It is hard to see them every day & know what they are doing & who they are with.
Don't beat yourself up about the email. Sometimes you just have to let them know.