It's good that she "missed a meal"- in fact, if she missed several it would still be fine. She's apparently been overfed for quite some time- corn & other rat snakes are generally enthusiastic eaters, but you're not doing them any favors with excessive food- they can die from "fatty liver disease".
The interval between meals should be gradually lengthened* from once a week as hatchlings. (*starting when they're about 4-6 mos. old, and then young adults should be fed about every 10 days- and older snakes, every 2 weeks, or so (when really elderly, every 3 weeks).
I wouldn't offer her any food for at least 2 weeks now, or until she looks & acts hungry, whichever takes longer. It would help if you can post a picture of her- not coiled up- so I can get a sense of her body weight (proportions). Her approx. length would help too. If she's not hungry for a while, that's good, & that's normal. She doesn't need the food- & she's been trying to tell you for a while, it sounds like. Re-read post #12. Make sure your co-workers understand this too- I know it's hard to be the new employee who has to let others know they've been on the wrong path, but the behavior of this snake proves it. I'd even feed her small adult mice for a while too, but never (!) large/"jumbo" mice.
IF her appetite doesn't resume in a couple weeks, or there's any other symptoms of illness, let us know? But hopefully this is what will "fix" her.

You shouldn't need "tricks to get her to eat"- just wait until she's actually hungry & needs food, & don't over-do it.
