I am sorry for your loss. If I have a snake that needs help sheding I will run some luke warm water in the tub. The first few min they are trying to excape, then they settle down. I never leave them unattended. Most of the time the first thing they do is poo.
I did have one bp that I needed to soak who would NOT settle down in the tub. I put him in a shoe box with water and paper towels so he could just relax and chill. There was only about 1 or 2" of water but most of the container was 1/2 to 2/3 full of paper towels so he couldn't really get his head underwater.
Again I am sorry for you loss.