Temperature are likely off get a digital thermometer or even a temp gun, spend a little money and invest in 2 tight identical hides in which the animal really feel secure.

No handling until the snake eats for you.

Now if it was me here is what I would do.

15 quarts tub, aspen bedding, two plastic bowls for hides, 78/80 on the cool side - 88/90 on the warm side....wait a week (no handling) and offer a live rat pup. If that fails wait another week and offer a live mouse.

This is a small snake for a year old and if this snake did not eat on a regular basis with it's previous owner it could be husbandry related or prey related.