So I frogged the whole thing (which took a long time and a good lint roller). Then I dug up a different Dragon Dreams chart for a conversion. Since Jennifer tends to use the same general palette it was pretty easy.
Because the holes from the previous stitching were very pronounced (you can see it in the bit of body where I ran out of thread) I matched up the stitching so that they would fall in the same place. It wasn't difficult at all and I'm pleased I went the extra step.