D.M.
L.,
I can relate on some level, except my family is here and even my son's fathers family lives within twenty minutes. I was never married, but my almost MIL and have never gotten along. I always felt she was judging me and my choices as, first her son's partner and then as a mother. While, their relationship was never a strong one, it was always obvious to everyone that she didn't approve of me or our relationship. When our relationship ended, I was three months pregnant and promptly excluded from ALL family events because she couldn't be around me anymore than she had to...that's what he relayed to me.
To this day, I am not welcome in her home, and neither she nor my son's Grandpa come to his parties or events if I am going to be there. They only see him on the days, when his Dad takes them over to visit...but, at least they get to see him.
My advice to you would be when your husband gets back and the dust settles from this, talk to him! Ask him to sit down and have a conversation with you about your feelings and the relationship with his Mom. Try not to attack him, after all she did raise him and I'm sure he loves her...just talk with him and not at him. I always reacted impulsively and it always ended up being an argument. Take some time while he's gone and organize your thoughts in a journal with points you want to make, so you remain on topic. What you are doing now, is great! In cases like this, little one's and hospitals can be a tough combo...let your husband be there for his family and if he needs you be there for him, but until he does your kids need you.
Best of luck!