She was one of the 36 fatalities of the July 18, 2019 Kyoto Animation arson attack which targeted the building. The building did not have fire sprinklers or indoor fire hydrants, due to its classification as a small office building. Ishida was the first victim to be identified as deceased by her parents. She was found dead on second floor of Studio 1, and the police determined that she died at approximately 10:40 a.m. from carbon monoxide poisoning. Ishida had worked at Kyoto Animation for 26 years. The police arrested 42-year-old Shinji Aoba on suspicion of murder and other offenses on May 27, 2020 and he was formally indicted on December 16, 2020.
