Alright we need pictures of your setup and everything.
How is she kept tank/tub
temps
how your measuring temps and humidity
how many hides
type of bedding
When ever having problem feeders ALWAYS drop down to a tub for a while to get them eating again and feed in the enclosure/tub. This makes them feel secure by recognizing the smells around him/her and willing to eat.
and for colubrids i feed every 5 days for a year slightly larger meals as they digest 10 times faster than the average boa and python.
DONT OFFER HER FOOD AGAIN TILL SUNDAY NIGHT. and offer it when its dark use a flash light to see.