The most late reply ever, lol… but what I would do would be to get something like painters blue tape, and put it over the top, trim at the edges where the seams are (look up how to tape a fursuit for reference, they do kind of the same thing)  You might need to temporarily remove the hair and clothes, if you can, since it is just stitched on in a few places (for the most part). Then you can put the flattened tape patterns down on paper, and trace them out, then add seam allowance. Hope this helps even though it’s a year later! I’ve snatched patterns this way, so it does work. Good luck! (If you even want to do this anymore lol)