You quickly brandish your ancestral knife and stab at the ghost. The light of the blade shines strongly as the ghastly woman wails in pain and her corporeal body dissolves.
The next morning you have no choice than speak to your courtiers about this - as most heard the wail - and they quickly call in some priests skilled at ghost-repelling. You tell them what you've learned, and they excuse themselves for few minutes to debate.
"My liege, we think we have the answer." The lead priest says. "This is most definitely ghost of Serinda, first wife of your father. Their only child killed her upon birth, and thus the ghost might not be aware of the boy's life, however short it was, and thus is kept here by its own blame. However, that you were able to stir her into presenting self means she is halfway lost, not able to distinguish Houlandin III's descendants from him. That you struck her with enchanted blade is most unfortunate, as she might appear wrathful tonight. Therefore, we advise a quick ritual of passing so that the ghost might have some chance to reach afterlife after being stuck in the palace for decades."
As you have no other options on mind and not wanting to deal with angry ghost later today, you decide to allow for the exorcism. They perform the ritual the same afternoon, and you don't hear of Serinda's ghost again.
875 AD, Summer
Beren tips his hat as you pass him on your way to the library.
"My liege, I bring news about the meeting with the Damdamian official."
"Yes?"
"Unfortunately, he does not trust you nor the Luathbas army, and therefore he doesn't want go further than exchange of correspondence. He would write, send it via trusted man to the border, where I would pick it up and bring it to you. After you write a reply, I would move to the border, and so on."
A) "That is too much proxies for something that will require trust and coordination between our nations in the future. No deal."
B) "That is too much proxies for something that will require trust and coordination between our nations in the future. Use your talking skills and try to arrange a meeting again!"
C) "I do not like the amount of proxies in this, but if he is that paranoid, we can do with the messengers. Tell him that I agree."