I don't know if you really need to soak her to get her used to it, she shouldn't really freak out if she is docile over all the first time you soak her for a bad shed. I have soaked my baby bp a few times and it wasn't always because of a bad shed, I just like putting him in the tub every now and then for 10 minutes, any longer though and the water gets cold. He enjoys it, he sticks his head right under and swims around gently I dont put the water more than an inch deep.