Several factors have combined to delay progress on Dee. Don't know when I'll have chapter 20 up but it'll be a while.
Meanwhile, if you're looking for a really, really interesting early teen character I strongly urge you to check out BarBar's Bec series of stories. I'm only about halfway through the first one and I'm enjoying it immensely. She's a fascinating character, a member of a fascinating family. BUT DON'T READ IT FOR THE SEX BECAUSE THERE ISN'T ANY.