Complex sentence: Tsukumo was safe from the Illuminati because she had been taken in my people protected by the True Cross Order, but when Izumo aproched her sister for the first time in five years, her sister did not remember her, unfortunately.
Split into simpler sentences: Tsukumo was safe from the Illuminati because she had been taken in my people protected by the True Cross Order. When Izumo aproched her sister for the first time in five years, her sister did not remember her, unfortunately.