You said exactly what I was thinking. I would recommend that you don't leave. I also recommend if she wants to 'feel' it, she can leave if she wants. I also recommend that you state she leaves the kids. I personally wouldn't give strength to OM, but if you feel the need to discuss, state that you don't want OM around your kids. Grow the new pair. You are not forcing her pi or asking her to leave, but you are not leaving.
It's not too late to make these claims and not to late to stay. I made the mistake of leaving.... Not sure if it would have helped, but I'll never know, because I thought I was a gentleman for leaving 'temporarily'.
Ralph88 Me 40s W 30s, D5 D3 , M7 T9 2013 B drop 1, EA found 2016 B drop 2, EA/PA? 2/16 Physical Seperation 2/16 I filed for D 4/16 PA Confirmed