I don't like hurting them, i don't like wearing gloves and i don't like covering hands in funny stuff - all that does is teach them that your hands are not a pleasant place to be. Time, patience and care and she will come round. It's much better to have a ferret that doesnt bite you cos your her buddy and source of food rather than one that doesnt bite out of fear.
atb, hope you get it sorted.
Jai.