Down Among the Sticks and Bones

I really enjoyed the first novella, and this one provides some good character development for the twin sisters from that story. I re-read the first one after reading this, so the inconsistency between the two endings - probably an artifact of trying to retrofit a prequel after the later story has been published - was rather obvious. Nevertheless, I thought this was very good, but it didn't quite reach the level of Doorway for me.