oh SO2, we are all here for you. this has to be tough.
as for MIL. you know you can't say anything bad because she will only go into defense mode. she is definitely in denial, and I'm sure H only shows her the good sides of his view point and of course she believes him. He's probably told her all the aweful things that the OW's H does and that he's an aweful H and to the kids and he's being the rescuer. I half would want you to send the email, and half not. I would almost want to email her and say, you know I am so sorry that you had to go thru your marriage with someone who was disrespectful to you and abused the marriage. At what point in the marriage did he finally turn around then? (I'm under the assumtion that he didn't--is he still alive?) I would be really upset, but of course she probably won't get it. she is in such denial.
on your D, I'm really sorry. when I found out my sis was doing that, to a boy she knew for 1 month I couldn't even look or talk to her for a long time. We all knew what would happen. and it did, she got pregnant in a month. I only say that because you need to be prepared. Somehow can you and her just go out together alone and just have a really good conversation? I'm not sure that anything you say will make her change her mind, but maybe start with asking questions, not telling her what she should do, but just really listen to what she is wanting out of life and how moving in with this guy is going to give it to her.
just hang in there, satan is trying to break you, don't let him steal your happiness.
Me 33 H 34 S9 S3 M 6 yrs (2gether 11 yrs) EA/PA 1/2006 DB 5/2006 H wants D 6/2006 H wants ME 8/2006 H "said" PA/EA over 8/2006 H erased OW off phone! 2/2007
"It is far better 2 choose humility & change oneself, than 2 wait in vain trying 2 chang someone else."