"During the party, Greta added some poisonous herbs in Queen's tea and that caused her a severe bleeding"
"Queen panicked and told my grandmother about it"
"So, Greta brought Queen to the hospital. And, the condition became serious that the Queen had miscarriage. At that time there was no technology or advanced medical treatment, so the doctors failed to identify what actually has happened"
"Greta was somehow connected to the doctors there and she somehow made them lie to the Queen that her body was really not suitable to give birth."
"So, they prescribed her some herbal medicines to recover. However, they aren't medicines but some poisonous items that could harm the reproductive system."
"Meanwhile worried that the King might get furious, The Queen asked Greta not to tell anyone about this. Greta agreed. She knew that these medicines Queen was using will totally destroy her reproductive system"