Yes, that's the best way to go. Lots of rewards for good behaviour, lots of trust training, patience and consistency.
Have you had her since a baby? If not, do you know her history or have any idea why she's biting. Does there seem to be a pattern to it, for example, when you pet other rats near her, at feeding time, when you give the other rats treats etc?
Have you had her since a baby? If not, do you know her history or have any idea why she's biting. Does there seem to be a pattern to it, for example, when you pet other rats near her, at feeding time, when you give the other rats treats etc?