Yeah, I gather the standard wisdom is to try to palpate it out, and if that doesn't work, take her straight to a herp vet. Oil isn't great for snakes, but this really is a life and death situation, so just go with what works and try not to use too much.
Hopefully one of the big breeders who's had experience with this will weigh in on the palpating technique.
Good luck. Tell her we're all pulling for her.