I didn't know that was the reason, and I'm sorry if I came off as mean or anything. Since it's to honor your mother, then I'm all for it. I didn't know if it was for a naming theme, or if you just liked the nickname S.M. or something. Although, I do think the flow is more important, personally, but there's always away around that, and it would still honor the person, like keeping the first initial, using a different form of the name, or just changing around the order of the first and middle name. That's just my opinion, though.