I trust you have quarantined her from the rest of your snakes. Two of my girls soaked in there water bowls before shedding. It turned out to be their pre-ovulation shed. Neither of the girls had ever soaked in the bowl before then, nor did they soak again before their pre-lay shed. I think it was a way of not only preparing the skin for shed, but it was during the period where they are bowl wrapping and staying on the cool side so it may be it was cooling them as well. One of the girls spent the entire week of the shed process in the bowl. That could be what you are seeing but no way of knowing until you just go through it. Best of luck.