Like she died and the medical examiner took her directly? It doesn't sound like it from this: "The 31-year-old died in the care of Mercy San Juan medical center in Sacramento in April 2023. The hospital shipped her body to a storage facility"
Jail time in a system where responsibility is so diffused won't happen.
Front-desk has a signed waiver? Good luck proving that it was the person on shift at the time who forged it, she doesn't remember what happened a year ago, and the existence of the fraudulent waiver isn't proof that she authored it.
Nobody's responsible, and nobody's accountable. There's a legal requirement that someone at the hospital should have done their jobs, but there's no legal requirement that forces someone particular to do them.
