You are both dealing with grief and loss, but she is also dealing with post-parturition depression and (if she's like most moms of young children) chronic sleep deprivation.
The ideal husband response to your wife is, "Don't even worry about the marriage for the next six months. Let's focus on you. I'm committed to you and the kids. I know you don't have any more to give."
Sam22--I think Rose's advice is awesome. I second it wholeheartedly. Rose knows what she's talking about. If you are both unsure about the future of your marriage...and you both say you love each other and are affectionate...then I think you need to buy yourselves time...you deserve time before making any big decisions like separation or divorce...the beginning of Divorce Remedy talks about the illusion of divorce and that people who are in stressful situations convince themselves that if only they divorce, then their problems will go away...and it's just an illusion...I don't see divorce helping either of you resolve your big issues...if for some reason you deal with all of your big issues and you still want a divorce, then tackle that question at that time...divorce without children is complicated...divorce with children is really complicated...it will only add to the burden/stress of your lives...
Gordie 40s W 40s M20+ kids 2016 BD W fantasy affair w OM1 I do everything wrong 2017 I start to DB W says TLTL files for D PA w OM2 2018 I do LRT W drops filing and OM2 situation slowly improving