If she was on cedar for a year I recommend seeing a vet to make sure she isn't suffering from an early RI or skin problems.
Just to make sure that it wasn't mites, I suggest treating the cage with a can of prevent-a-mite.
http://www.pro-products.com/index.ph...d=53&Itemid=59
Ball pythons don't usually soak before a shed.. maybe after if they had shedding problems. If she was soaking and you saw bugs in the cage I'm guessing she has mites. They almost always soak when they have mites.