Perhaps Emma River, at that time, was worried that Keira Leaf's presence would hinder Olivia Leaf's opportunities to emerge, so she prepared everything in advance to pave the way for Olivia. Or perhaps, she transferred all her hatred towards Vivi Sydney onto Keira Leaf, making her suffer a childless life forever.
Joshua Sulliven suddenly realized something: maybe Emma River had never intended for Keira Leaf to die. She had framed Keira and sent her to East City Prison, painstakingly planned and arranged it, yet she never sentenced her to the death penalty, only life imprisonment. She had poisoned her, and instead of using a slow-acting poison to kill her, she chose womb poison to deprive her of fertility for a lifetime.
This woman never wanted Keira's life, she wanted to torment her for a lifetime. She wanted to see her living in pain forever!