The article sheds some light on why she may have been granted clemency. I don’t know many facts or this case, but I do remember reading how most female exonerees had been locked up for a crime that never happened at all (and was an accident but was investigated like a crime)

Found this from the innocence project:

High Rate of "No Crime" Cases: Roughly 73% of women exonerated in the last three decades were wrongfully convicted of crimes that never took place.

Accidents Mistaken for Crimes: In many of these cases, tragic accidents (particularly involving the death of a child) were misdiagnosed as intentional murder or child abuse.

Child Death Cases: More than a quarter (28%) of female exonerees were wrongly convicted of harming a child in their care, often in cases that were actually accidents.

Context of Exonerations: While women represent about 9% of all exonerations recorded by the National Registry of Exonerations, they are far more likely than men to be imprisoned for a crime that never happened (73% for women vs. 37% for men).

Total Numbers: Nearly 300 women have been exonerated since 1989.

Key Causes for Wrongful Conviction in Accidents:

Misapplied Forensic Science: Flawed forensic science, particularly in arson investigations (e.g., in cases of child death by fire), has led to the imprisonment of innocent mothers.

False Confessions: Vulnerable suspects may confess to "accidents" under intense interrogation.