Yeah...I'd give it another day or so and see if she makes any more progress on her own. If she really does seem "stuck" then I highly recommend the "wet bag" approach rather than soaking in a tub.
Get a pillowcase (turned inside-out and make sure seams are secure) and soak it with warm water...wring it out thoroughly. Soak a hand-towel, wring it out, and put it in the case. Place the snake into the inside-out case and tie the top. Place the bagged snake back into its enclosure. Let simmer for 30-60 minutes. Remove snake.
Usually at this point, you have a perfectly shed snake and a big mess in the bag.A particularly difficult shed may take 2-3 treatments (given once per day).
Let us know how it all turns out.