Milly, 10, died from an infection likely linked to the hospital's environment. The investigation by Police Scotland, which began in 2021, involves multiple deaths at QEUH and could lead to criminal charges.

Scotland's largest health board, named as a suspect, is under scrutiny for its role in the hospital's issues. The investigation is significant, as it could result in the first use of the Corporate Manslaughter and Corporate Homicide Act in Scotland. If NHSGGC is found guilty, they face an unlimited fine and potential separate health and safety prosecutions.

In addition to Milly's case, the investigation covers the death of Gail Armstrong and others. Family members of the victims have welcomed the investigation, calling for accountability from the health board.

NHS Greater Glasgow and Clyde has pledged cooperation with the inquiries and aims to improve healthcare services. A public inquiry is also examining the failings at QEUH, focusing on what went wrong and potential improvements, separate from establishing civil or criminal liability.