In February 2077, she underwent voluntary radiation exposure in hopes of developing a radiation treatment serum. In accordance with the directions of her experiment, she was to absorb six Sieverts (approx. 600 rads) and then administer the serum. However, the serum had no effects on the radiation, and her request to leave the experiment was either denied or ignored.
She began to plan a farewell message to her parents, but as she did so, she likely succumbed to her the effects of the radiation and ghoulified, later becoming a glowing one before she could finish.