User blog comment:Yountoryuu/The Wikia's SBS/@comment-2244785-20110204080428/@comment-3401636-20110204110437

I don't think so. I'm pretty sure she can just multiply body parts, not simply create more. So if she lost an arm, technically she could replace it with another arm, but it would be the opposite arm i.e. if she lost her left arm, she would have 2 right arms, and vice versa.