Jam vs Millia. I know this is already in Millias favour, she not only outranges you with her pokes, you can't jump in on her, so j.HS and iad214k are off and her sweep outranges yours. I seem to only win when I rely on my Shishou's; other than that, mixing up my pokes with f.S and 2D seems to be the only other way to get close to her; but even that's too risky.
Another thing I came up with is to and get her from below with j.S while she's in the air; but other than the afore mentioned, there isn't much to do. Any advice?