I am short, and have small feet, too and for years fought the too-high cuff on the ski boots. I lived throught the "Let's just make a smaller men's boot" and pawn it off on the women thing, and struggled for years. Finally, a trainer I had (when I taught skiing) suggested that I just buy kids boots. I know most boot manufacturors make high end kids boots (race). I ski Technica, and for at least 8 years, have skied in the race boot for juniors.
Then, I did have some custom liners made, and I loved them. But I also heard other women compalain about those same custom liners, but I actually ended up getting much longer wear out of them than the liners from the boot manufacturors. I had Sure Foot make mine, they were all over Colorado.
I believe there are also Junior Race bindings that might fit your foot, some of them have DIN settings that go up to at least 10, I believe, so you would still be fine, Tecs suggest you have a binding that has a DIN scale where you fall somewhere in the middle.