Well, I can't blame any creature for objecting to being dinner...that's not what I meant by "nasty", btw- I just don't find their smell to be appetizing. But happily for humans, snakes like 'em.
But any time I've had to feed live, I am right there with my tongs if anything should "go wrong". Sometimes a snake just doesn't get the right grip- & even if they ultimately win the battle, the rodent manages to turn just enough to bite the snake too, so it's not without risks. But I can assure you that I'd do the same thing with this snake for the time being if I were in "your shoes"- keep feeding her for a while & then see if she'll accept a f/t (rat or mouse).