Ladies, most of us MIL's really are not out to steal your husband back as our little boys. We love them, we raised them to the best of our abilities and now we have sent them out into the world and hope for them to be successful and happy. We love them dearly but really, WE DO NOT WANT THEM BACK!!
If you do not live close to your mil and you and your dh come to visit.your families, its ok if you make time for his family too. Your mil is not "winning" anything by being able to fix a meal for you and your husband. Your mil is not trying to make you feel like you cannot be with your family, she only wants a little time with her son and with you, her daughter. And, please, remember that your mil is human too. She actually does have a life and so does the rest of your husband's family. They are not sitting and waiting to be graced with your presence, so they need to be told what your plans are for the time you are in town. Sometimes they really do have plans that cannot be changed by your whim.
Making it stressful for your husband to visit with his family is not the best thing for your marriage. When and if it comes to an argument over every visit, its going to be you he is angry with not his mother.
I do realize that there are some MIL that came straight from Hades. But, please, don't just assume yours is going to be that way.
Yes, I am having dil issues. I just don't get it. His first wife was the worst thing for him but the best addition to our family (I am glad she is out of his life, but do miss the way she made herself a part of our family). His second wife, wonderful for him but acts like a spoiled brat about everything! Always has to have her way and if she doesn't get it she makes things impossible for everyone else.
Ok, vent over. Smile on my face, ready to see them and spend an enjoyable day with them. (day, as in a few hours. long enough for me to cook dinner and give them their Christmas gifts. she is mad because she planned to spend that day with her family, although when I asked her their plans I was told they were going to spend the night before and that day with us. So now we get them from exactly the time I told we would eat until she manages to convinces him to leave)
Oh, one last thing. Remember that your MIL was once a young wife too. She is not stupid, she knows what you are doing. She also knows her son and she knows when the message is really coming from you and when it is coming from him.