Short answer NO you do not assist an animal off food, assisting is for hatchlings that NEVER took a meal on their own or animal on death's door.
Do you know when the last clutch was laid and whether or not that female resumed feeding after laying.
She knows how to eat so right now it's about making sure your husbandry is optimal (proper enclosure, temps, humidity etc), low stress (NO handling unless it is for cage maintenance) you may even wan to consider downsizing the enclosure (I have had trouble feeders that sized switch to 15 quarts tubs in the past) and more importantly it is about patience.
As food goes offering a rat pink to a 4 ft snake will not accomplish anything (it will not likely be recognized as a prey item), you need to offer a small rat (around 4 weeks old) and see how it goes.