Munchkin appears to be getting worse rather than better. Cobweb mostly only hisses now when Lucy runs at her or tries to get too close, but Munchkin hisses all the time she's around the kitten and growls and yowls, even when the kitten is just sitting still. She wasn't this bad a couple of days ago, so maybe we're doing something wrong.
No pictures of the kitten as yet. She's difficult to photograph, because she's all black (with dark eyes), so there isn't much contrast. Shannon tried to take some pictures of her today, but she was running around too much to show up as anything but a black blur.