You might want to try scenting a newborn pinky mouse. Live or frozen should work. Try cage feeding it at first so they wont be stressed out. Some snakes go on defensive mode rather than feeding mode when first taking to box feeding. I would also recommend using long feeding tongs when feeding. The snakes in the photo were gorgeous. I wish you the best of luck. Maybe someday a clutch or two might drop for you.
HAPPY HERPING.