Should I leave my mother alone?

I live in S Carolina with my husband and three kids. My husband is from Texas and all of his family lives there. The only person that lives in S Carolina is my mother who is 73 and miserable. My husband wants to move back to Texas and raise the kids around family (lots and lots) of family. The problem is my mother, she won't leave and come with us but how do I leave her? I have two brothers that live in other states and she will not go with them either. My kids don't like living here and say how it's so boring and Grandma never wants to do anything.My mother is not the family type but if I tak them away she will have noone. We don't have jobs there and would be starting all over. The kids beg us constantly to move there so they can be a part of a big family. Every year we have Christmas here with my mother and brothers and this year they said they don't want to be here they would rather go to Texas where it's fun. I feel torn about leaving her but I also know that I am doing a great disadvantage to my kids. What do I do?