Boiling pinky mice works well for grey banded king snake hatchlings, I would be tempted to try it.
I fill a small pyrex dish with water, then transfer just that water to a small pan to bring it to a boil. I place the frozen pinky in the pyrex dish, and pour the boiling water over it.
Please use caution and a quality container. Pyrex can withstand the shock, but most other glass may shatter. A metal container might be a fair alternative.
Place the boiled pinky in the enclosure after it has cooled some, and leave it alone. I usually go for overnight, only checking the next morning.