Excellent start my friend! Confrontation sucks I know, but it's absolutely necessary at this point in your marriage to get you off the treadmill and actually moving forward.
BRAVO for calling her on the carpet about the e-mail comment that she "might" do something, that was such a non-committal response on her part it's really quite pathetic. She knew damned well that wasn't a committment to do something about the situation. FWIW, we all have to confront like this with our issues I believe....if we don't call bull when it's necessary, they will continue to pile it on us. Some of us have to do it to differing degrees, but we all have to do it.
Way to go! Now, don't let this be a one-time thing. GEL