Hey Stockeh,
What temps she on? If the temperature is incorrect she may not eat.
We've had some strange, non-feeders in the past. First thing is to make sure the temperature is correct and the snake is not being stressed out, which may happen if she's being handled too frequently or there are insufficient hiding spots. Also frequent traffic by the enclosure can make them shy and stress them.
If all of the above are as they should be, next thing to look at is her behaviour. Does she appear lethargic, thin on the neck? Is she tenting? Tenting is when you pinch the snakes skin gently and it fails to spring back into place quickly. Tenting occurs if the animal is dehydrated or is of ill health. You may also wish to open the snakes mouth and check that everything looks in order there, as if the snake has mouth rot it will not eat.
If she appears to be in good health, then I advise you to persist in offering live, fresh-killed and thawed small mice / rat pups initially. Hopper mice, when of appropriate size often get the snake going due to their bouncing movements. Also try feeding at night rather than during the day. One method, which many suggest (although has not worked for us) is placing the snake overnight in a very small container where she cannot escape the prey.
If she continues to not feed for a time I would advise you to try scenting the food with other animals such as fish and birds, braining the pinkies, or even washing the pinkies with non-scented soap and rinsing thoroughly. If THAT fails then it's time to try alternate food sources. Some alternates which have worked for us in the past are fish, earthworms (no joke), skinks and finches. The problem with this is at times it can be difficult to wean them off these food sources as they become inappropriate for the size of the animal. We found that once eating these strange foodstuffs, however, that it was not very difficult to get them feeding on mice / rats, by offering no food for a longer period than usual, thus making the snake very hungry indeed, then offering the desired prey (rat/mouse).
Also removing the water dish for a couple of days before offering food sometimes works.
If all of the above fails to get your snake feeding, there's assist feeding (which we've found to work around 20% of the time). To assist-feed, use the pinkie's snout to gently force the snake to open its mouth. Once open, insert the head of the pinkie, then hold your index finger on the dorsal side of the snakes head, thumb below, and hold firmly while gently pulling the pinky back, to hook it on the snakes teeth. Note that both assist and force feeding is highly stressful to the animal and as such are the last options.
Failing assist-feeding the last resort is force-feeding.