Hi. I'm sorry to hear about your mom. I think that it is still pretty fresh for you and will take some time to adjust. You're never going to get over it, think of her less, wish she were here, etc, but you learn ways to deal with those feelings. Whenever I start to feel negative about things I try and always think of a positive. For example, your kids still have your mother-in-law there to support them along with you and your husband as well. No matter how big a fan you are or are not, she is still part of your family and over time I'm sure you will come to see that her still being with you is a blessing. And it sounds as though your mom was able to meet her grandchildren, that is a huge blessing! I'm not saying it's not going to hurt, but you have to eventually try and focus on the positive of everything, for yourself, your husband, your children, and your mom,
I don't have the same situation, everyone's is always different along with relationships, but I lost my mom just over 4 yrs ago. She went into the hospital on a Wed and passed away Fri morning. There wasn't much time to really fully grasp what was going on. At that time I had been married for a little over a year to my husband and literally days before she went into the hospital, I went off the pill. I was able to tell her that we were going to try and have children but her not being here when both of my girls were born was and still is remarkably hard. My mom passed away in Oct and we found out we were pregnant in Jan the following yr, so I don't think I fully went through my grieving process. I had something to be so excited about. Then after my first daughter was born, the hardships of being a first time mom without my mom there was overwhelming. Now the questions from my over 3 yr old are coming in about why are you sad about Grandma, why did she die, where is she, why doesn't she still live at Grandpa's, did she do something wrong? These questions are heartbreaking and has me re-living everything but I want my daughter to know that I'm there to talk to her about anything, even though she is only 3. It's just hard to keep the answers easy, because we are at the why, what, who stage. :)
Good luck to you with going through your personal grieving process, it is not easy but you sound like you have people around you that love you and care about you. If you feel bad talking to your husband regarding this, try and talk to a friend or attend a grieving seminar. It does feel better to get things off your chest! Take care.