A Metropolitan Hospital (in the eastern part of the 23 wards) That Leaves One Speechless

Late at night on October 31st, my mother collapsed from a cerebral infarction.
She was immediately transported by ambulance to a metropolitan hospital within the ward.

Although smaller than the metropolitan hospitals in the city center, it is a hospital that claims to be a hub for emergency medical care in the eastern part of the 23 wards.
If someone is transported by ambulance and is unconscious, even a layperson can see that they are clearly not in a normal state.
The hospital, at least, suspected a cerebral infarction and took a CT scan.
It seems that CT images are not as clear as MRI images, but they judged that there was nothing wrong, and two nurses assisted my sister, who was accompanying my mother, in putting my mother—who could not move—into a taxi to send her home.

After returning home, it took three people—another sister who had rushed over and the taxi driver—to finally get her from the taxi to the entrance.

Four hours later, her condition worsened, so we contacted her primary care physician despite it being late at night; we were told to call an ambulance immediately, and she was transported to a different hospital again.
Emergency surgery was performed there, but paralysis remains on her left side after the operation.

Currently, in order to grasp the full situation of that day, I am requesting the disclosure of the 'Ambulance Dispatch Record (copy)' from the Tokyo Fire Department, and the 'Medical Records (chart) copies' from the metropolitan hospital and the hospital she was subsequently transported to.

Due to my profession, I am operating under the assumption that 'electronic medical records' cannot be tampered with, just as an auditor's 'audit working papers' cannot be altered after the fact in electronic records, but I do not know the world of medicine.
If it is a hospital at the level where charts are still written by hand in this day and age, it would be better for the citizens of Tokyo if such a metropolitan hospital were abolished.