Theres a actual mission you have to take part in to get Mia. Theres this mission were you have to stop those Diefient( Can't spell their name, but its the shape shifter ganlion.) Theres this area you have to discover, only if you get the mission. You have to stop their sisters and the area opens up if you discover it. The enemys are around level 51-55. Shes kiddnaped and you have to free her.