What is the ideal gear and level for Nightsister Zombie?

I would go all the way to 7 stars with her on lvl 85 but with the lower gear level possible. As Vontzat said the idea is her not to be able to survive a fracture or a shock or anything that would keep her away from taunting. The 7 stars is only if you are planning to use her in every aspect of the game (mainly heroic raids) however if that’s not your plan just keep her as it is.