You could try feeding every 5 days instead. They're done digesting around day 3 I believe. We've raised all of ours on a 5 day schedule.
This. You can keep her on that schedule until she's taking small rats, and then offer one a week.
If you're worried about parasites you can call the vet and ask if he'll do a fecal exam without seeing the snake. If so ask how to collect and ship the sample.