I don't know really- you'd have to ask a specialist I think.
I always thought only males get muscular dystrophy? I thought woman carry it, but pass it to their sons?
My mother's brother died of ducene's muscular dystrophy (i think that's how it's spelled) when he was about 13. Some of his sisters have had healty boys, but all of the girls inmy generation have only had girls (14 of them !!!) so there's really no way of knowing whether we are still carrying it in the family without genetic testing.
If it's just the birth you are worried about, you probably wouldn't need to decide which way you'd try to do it, an emergency c-section can always be done if need be. You should find out about the likelyhood of passing the condition on, in the event you conceive a boy.
Good luck.