Prior to the start of the series, she was killed by her sons, but Richter removed her heart and had it transplanted into Yui so she would be able to resurrect in a different body.
قبل بداية المسلسل، قتلت من قبل أبنائها، لكن ريختر أزال قلبها وزرعها إلى يوي حتى تتمكن من الإحياء في جسم آخر.