I will freely admit that I don't know Dawn's canon, but I've got to ask: Is that much stuttering when she talks really necessary? I find it extremely off-putting. There's nothing particularly wrong with -what- she says, just that the stuttering makes it painful to read and I find myself skipping anything she's in to try and avoid it.

If it's canon to the character, then I guess keep on keepin' on, but if it's not, you may want to consider cutting back some.