So, she was also involved in this prescription!
The number three formula had no issues per se, but at the last minute, Nancy instructed her to add an herb called "mirabilite," which was handmade by Nancy herself. This stony herb consisted of saffron, mugwort, peach kernels, mirabilite, and musk.
All these herbal medications were highly effective for women when used separately. For example, saffron is known to alleviate menstrual pain.
However, when mixed together, they formed a poison that not only intensifies menstrual pain but also can lead to infertility if taken regularly!
For the number four formula, the concentration of mirabilite was increased because Liam Yancey told Nancy that Tara Summer's menstrual pain had significantly subsided.
Though Nancy was puzzled, she still increased the dosage...
Filled with guilt, Aunt King trembled and knelt, pleading, "Young... young master, please spare Miss Nancy! Please..."