Scáthach needs some minders! The master obviously needs to be able to take a hit and reign in her temper when necessary. Preferably male, because she's attracted to power and would likely choose a male anyway. The apprentice is welcome to be any gender, though he/she should also be able to withstand a godly hissy fit/beat down.

Gifts are negotiable, but definitely extra durability and strength for the master, and probably some kind of emotional manipulation for the apprentice. But again: negotiable!