Ya, i am with ignoring her... you want your H to ignore her, you need to set an example and do the same...

Don't use the email, I can't see much good coming from it... it's not particularly confrontational

If you can corner her in a dark alley somewhere...

Anyhow, ya DON'T BE THERE when he comes to see the kids, GET OUT..

DEEEEEEEEEEETAAAAAAAAAAACCCCCCCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHH